README.md

# Metrics Timeline

An incomplete timeline of events that might affect [Tor Metrics](https://metrics.torproject.org/), to aid in the interpretation of data and graphs.

https://gitlab.torproject.org/tpo/network-health/metrics/timeline

Some entries represent singular point events; some are time ranges with a beginning and an end; and some are ongoing ranges that have begun but not ended yet.

> |start date|end date  |meaning|
> |----------|----------|-------|
> |2015-03-01|          |This is a point event.|
> |2015-03-01|2015-04-15|This is a range with a beginning and end.|
> |2015-03-01|ongoing   |This is an ongoing event that has not ended yet.|

The **places** column uses [ISO 3166-1 country codes](https://en.wikipedia.org/wiki/ISO_3166-1#Current_codes).

The **?** column indicates whether an entry is tied to a known real-world event. An "X" in the **?** column means that some significant change is visible in the data, but no cause for it is known. If you know the cause, fill it in and remove the "X".

## How to contribute

Blog post: [How to contribute to the Tor metrics timeline](https://blog.torproject.org/contribute-to-tor-metrics-timeline)

1. Register a Tor GitLab account at https://gitlab.torproject.org/users/sign_in.
2. Open a [new issue](https://gitlab.torproject.org/tpo/network-health/metrics/timeline/-/issues) for each event, with all the necessary information: start date, end date, places, protocols, description, links. If you know how to clone the repository and make a branch, you can open a [merge request](https://gitlab.torproject.org/tpo/network-health/metrics/timeline/-/merge_requests) instead. Use the `tidy` script to make sure the syntax is correct.

Things you can do:
* Find an event with **end date = ongoing**, find out if it has ended by now, and insert the correct end date.
* Find an event with **? = X** and try to find a news event that could explain the change in the graphs.
* Go through one of the [other data sources](#other-data-sources) and ensure that all its events have been imported.

## Helper maintenance scripts

The `tidy` script sorts the database and canonicalizes formatting.
```
$ ./tidy --in-place README.md
```

The `scrape-geoip` script builds table entries from the history of geoip databases in tor.git. Geoip entries last updated 2021-08-19.
```
$ ./scrape-geoip --since=[YYYY-MM-DD] ~/src/tor >> README.md
$ ./tidy --in-place README.md
```

The `md2csv` script extracts the database and outputs it as CSV.
```
$ ./md2csv README.md > timeline.csv
```

## Other data sources

* [OONI/censorshipwiki](https://web.archive.org/web/20190727033454/https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki)
* OONI [reports](https://ooni.org/reports/) and [blog posts](https://ooni.org/blog/)
* [censorship-analysis issues](https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issues?state=all) (not all events have been imported into this page)
* [Issues with the "block" tag](https://gitlab.torproject.org/legacy/trac/-/issues?state=all&label_name%5b%5d=block)
* [Tor Browser ChangeLog.txt](https://gitweb.torproject.org/builders/tor-browser-bundle.git/tree/Bundle-Data/Docs/ChangeLog.txt) (for release dates)
* [infolabe-anomalies mailing list](http://lists.infolabe.net/lists/listinfo/infolabe-anomalies) (automatic detection of anomalies in user counts)
* [circumvention-survey database](https://internet-freedom-science.org/circumvention-survey/database.zip) (see `database.attacks` for a list of times censors have tried to block Tor)
* [Timeline of application blocking orders in Brazil](http://bloqueios.info/en/timeline/)
* [Google Trends results for e.g. "Tor Browser"](https://trends.google.com/trends/explore?q=Tor%20Browser)
* Edit history of the [Internet censorship by country](https://en.wikipedia.org/w/index.php?title=Internet_censorship_and_surveillance_by_country&action=history) article on Wikipedia.
* ["Last Month In Internet Intelligence"](https://internetintel.oracle.com/blogs.html) posts
* [Internet Society Pulse](https://pulse.internetsociety.org/shutdowns) on Internet shutdowns
* [Cloudflare Radar](https://radar.cloudflare.com/)

## Timeline

|start date|end date|places|protocols|description|links|?  |
|----------|--------|------|---------|-----------|-----|---|
|2022-08-12||||Release of tor 0.4.5.14, 0.4.6.12 and 0.4.7.10, with a fix to the geoip database.|[announcement](https://forum.torproject.net/t/stable-release-0-4-5-13-0-4-6-11-and-0-4-7-9/4259)||
|2022-08-11||||Release of tor 0.4.5.13, 0.4.6.11 and 0.4.7.9, with congestion control changes aimed at mitigating the DDoS attack that started 2022-06-06.|[announcement](https://forum.torproject.net/t/stable-release-0-4-5-13-0-4-6-11-and-0-4-7-9/4259)||
|2022-07-30||id||Mass blocking of websites in Indonesia.|[article](https://www.reuters.com/technology/indonesia-blocks-yahoo-paypal-gaming-websites-over-licence-breaches-2022-07-30/)||
|2022-07-14|||bridge|Release of Tor Browser 11.5, with a new feature of automatic censorship circumvention configuration.|[blog post](https://blog.torproject.org/new-release-tor-browser-115/)||
|2022-07-14||ru||The Tor Project web server block, which had begin on 2021-12-07, is lifted.|[record](https://reestr.rublacklist.net/record/3845366/) [GitLab comment](https://bugs.torproject.org/tpo/community/support/40050#note_2823017) [BBS comment](https://github.com/net4people/bbs/issues/97#issuecomment-1191859176) [zapret-info diff](https://github.com/zapret-info/z-i/commit/09e7b2aa7c14d0682b83b8f448ab02fd11d0b1d6)||
|2022-06-17||||Release of tor 0.4.7.8, fixing a DoS vulnerability relating to the new congestion control in 0.4.7.7 (TROVE-2022-001, [CVE-2022-33903](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-33903).|[announcement](https://lists.torproject.org/pipermail/tor-announce/2022-June/000242.html) [issue](https://bugs.torproject.org/tpo/core/tor/40626)||
|2022-06-06|ongoing|||Network-wide DDoS attack.|[status.torproject.org](https://status.torproject.org/issues/2022-06-09-network-ddos/) [forum thread](https://forum.torproject.net/t/tor-is-much-slower-latterly-than-it-used-to-be/3567) [graph onion v3 traffic](https://metrics.torproject.org/hidserv-rend-v3-relayed-cells.html?start=2022-03-01&end=2022-07-15)||
|2022-06-06|ongoing|de fi lt nl ro||Network-wide DDoS attack. Involved countries for users spikes.|[status.torproject.org](https://status.torproject.org/issues/2022-06-09-network-ddos/) [forum thread](https://forum.torproject.net/t/tor-is-much-slower-latterly-than-it-used-to-be/3567) [DE](https://metrics.torproject.org/userstats-relay-country.html?start=2022-03-01&end=2022-07-15&country=de&events=off) [FI](https://metrics.torproject.org/userstats-relay-country.html?start=2022-03-01&end=2022-07-15&country=fi&events=off) [LT](https://metrics.torproject.org/userstats-relay-country.html?start=2022-03-01&end=2022-07-15&country=lt&events=off) [NL](https://metrics.torproject.org/userstats-relay-country.html?start=2022-03-01&end=2022-07-15&country=nl&events=off) [RO](https://metrics.torproject.org/userstats-relay-country.html?start=2022-03-01&end=2022-07-15&country=ro&events=off)||
|2022-05-23||||Release of Tor Browser 11.0.13, the first stable release with congestion control.|[blog post](https://blog.torproject.org/new-release-tor-browser-11013/)||
|2022-05-12||uz|meek|meek users in Uzbekistan drop to zero.|[issue](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/40031) [bridge users graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2021-12-01&end=2022-06-01&country=uz)|X|
|2022-05-06 12:14:51|||snowflake|Upgraded the network uplink of the Snowflake bridge from 1 Gbps to 10 Gbps.|[issue](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40138)||
|2022-04-27||||Release of tor 0.4.7.7, the first release with congestion control.|[forum post](https://forum.torproject.net/t/stable-release-0-4-7-7/3108) [blog post](https://blog.torproject.org/congestion-contrl-047/)||
|2022-04-12 15:49:35|||snowflake|Stopped the tor instances flakey1–flakey8 on the interim Snowflake bridge, leaving only instances flakey1–flakey4 running on the new bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40111#note_2795523)||
|2022-04-11 15:49:30|||snowflake|Moved Snowflake traffic to a new bridge running instances flakey1–flakey4.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40111#note_2794860)||
|2022-04-11 14:00:00|2022-04-12 07:00:00|tm||The intensity of Internet blocking in Turkmenistan increases. Some sources inside the country claim that "the Internet has been blocked almost completely".|[NTC thread](https://ntc.party/t/reported-shutdown-in-turkmenistan-2022-04-11/2224) [Access Now post](https://www.accessnow.org/turkmenistan-digitally-disconnects-nation/) [Cloudflare Radar tweet](https://twitter.com/CloudflareRadar/status/1513510448762695687)||
|2022-04-11 05:10:35|||snowflake|Started a new Snowflake bridge running tor instances flakey1–flakey4, temporarily running in parallel with the interim bridge with its instances flakey1–flakey8.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40111#note_2794752)||
|2022-03-19 15:05:14|||snowflake|Stopped the tor instances flakey1–flakey4 on the old Snowflake bridge, leaving only instances flakey1–flakey8 running on the interim bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40110#note_2788893)||
|2022-03-18 03:21:45|||snowflake|Restarted the interim Snowflake bridge to correct a problem with onion keys.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40110#note_2788622)||
|2022-03-16 16:51:35|||snowflake|Moved Snowflake traffic to the interim bridge running instances flakey1–flakey8.|[comment](https://bugs.torproject.org/tpo/tpa/team/40664#note_2787624)||
|2022-03-15 22:32:45|||snowflake|Started an interim Snowflake bridge running tor instances nicknamed flakey1–flakey8, temporarily running in parallel with the main bridge with its instances flakey1–flakey4.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40110#note_2787143)||
|2022-02-28|||bridge|BridgeDB moves to an [rdsys](https://gitlab.torproject.org/tpo/anti-censorship/rdsys/) backend.|[announcement](https://lists.torproject.org/pipermail/tor-project/2022-February/003298.html) [issue](https://bugs.torproject.org/tpo/anti-censorship/rdsys/12)||
|2022-02-24|ongoing|ru ua||Russian invasion of Ukraine. In the following days, various social media are partially blocked in Russia. Bridge users increase in Russia; relay and bridge users increase in Ukraine.|[Wikipedia](https://en.wikipedia.org/wiki/2022_Russian_invasion_of_Ukraine) [Relay users in Russia](https://people.torproject.org/~dcf/metrics-country.html?start=2021-12-01&end=2022-03-10&country=ru) [Bridge users in Russia](https://metrics.torproject.org/userstats-bridge-combined.html?start=2021-12-01&end=2022-03-10&country=ru) [Relay users in Ukraine](https://metrics.torproject.org/userstats-relay-country.html?start=2021-12-01&end=2022-03-10&country=ua) [Bridge users in Ukraine](https://metrics.torproject.org/userstats-bridge-combined.html?start=2021-12-01&end=2022-03-10&country=ua) [OONI article](https://ooni.org/post/2022-russia-blocks-amid-ru-ua-conflict)||
|2022-02-18 14:02:05|2022-02-18 15:26:38||snowflake|Outage of the Snowflake bridge.|[mailing list post](https://lists.torproject.org/pipermail/anti-censorship-team/2022-February/000224.html) [alert failed](https://lists.torproject.org/pipermail/anti-censorship-alerts/2022-February/001042.html) [alert succeeded](https://lists.torproject.org/pipermail/anti-censorship-alerts/2022-February/001043.html)||
|2022-02-01||||Tor 0.3.5 reaches end of life.|[mailing list post](https://lists.torproject.org/pipermail/tor-relays/2022-January/020221.html)||
|2022-01-31 18:20:00|||snowflake|Switched the snowflake bridge from a load-balanced staging server back to the now load-balanced production server. Debugged connection problems until 2022-01-31 19:52:04.|[issue](https://bugs.torproject.org/tpo/tpa/team/40602) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40095#note_2773704) [comment](https://github.com/net4people/bbs/issues/103#issuecomment-1033067920)||
|2022-01-28 01:03:40|2022-01-28 02:05:42||snowflake|Switched the snowflake-server (at the time running on a load-balanced staging server) for a version with CPU profiling.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40086#note_2773087)||
|2022-01-25 17:41:00|||snowflake|Switched the snowflake bridge to a temporary load-balanced staging server. Debugged connection problems until 2022-01-25 18:47:00.|[issue](https://bugs.torproject.org/tpo/tpa/team/40598#note_2772287) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40095#note_2772325) [post](https://forum.torproject.net/t/tor-relays-how-to-reduce-tor-cpu-load-on-a-single-bridge/1483/16) [comment](https://github.com/net4people/bbs/issues/103#issuecomment-1033067920)||
|2022-01-24|2022-02-10|uz|relay|Temporary decrease in relay users in Uzbekistan.|[relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-11-15&end=2022-04-15&country=uz&events=off)|X|
|2022-01-11|2022-02-01|bf|obfs4|Temporary spike in obfs4 users from Burkina Faso.|[bridge users graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2021-10-01&end=2022-04-15&country=bf)|X|
|2022-01-10 13:29:00||kz|obfs4|The Tor Project begins to distribute obfs4 bridges that listen on ports that are reachable in Kazakhstan, despite the ongoing Internet shutdown.|[forum post](https://forum.torproject.net/t/internet-shutdown-in-kazakhstan-how-to-circumvent-censorship-with-tor/1679)||
|2022-01-07 19:29:21|||snowflake|Increased capacity of the mapping to client IP addresses on the snowflake bridge.|[issue](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40084) [deployment comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40090#note_2768545)||
|2022-01-05 10:30:00|2022-01-11 00:00:00|kz||Country-wide Internet shutdown in Kazakhstan. Was preceded by a shutdown of most mobile networks starting 2022-01-04 14:30. Access was restored for a few hours each day.|[Cloudflare blog post](https://blog.cloudflare.com/internet-shut-down-in-kazakhstan-amid-unrest/) [RIPE Labs blog post](https://labs.ripe.net/author/emileaben/the-kazakhstan-outage-as-seen-from-ripe-atlas/) [NTC thread](https://ntc.party/t/network-shutdown-all-around-kazakhstan/1601) [BBS thread](https://github.com/net4people/bbs/issues/99) [IODA](https://ioda.caida.org/ioda/dashboard#lastView=overview&view=inspect&entity=country/KZ&from=1641168000&until=1642032000)||
|2022-01-04 01:00:00|2022-01-04 09:45:00|gm||Internet outage in Gambia.|[blog post](https://blog.cloudflare.com/the-gambia-without-internet/)||
|2021-12-29 17:58:15|2021-12-29 18:49:17||snowflake|Outage of the snowflake bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40088) [alert failed](https://lists.torproject.org/pipermail/anti-censorship-alerts/2021-December/000786.html) [alert succeeded](https://lists.torproject.org/pipermail/anti-censorship-alerts/2021-December/000788.html)||
|2021-12-24||ru|obfs4|Another round of obfs4 enumeration and blocking occurs in Russia.|[comment](https://bugs.torproject.org/tpo/community/support/40050#note_2768029)||
|2021-12-22|ongoing|fi|relay|Increase of relay users in Finland.|[tor-talk thread](https://lists.torproject.org/pipermail/tor-talk/2022-January/045793.html) [possible explanation](https://lists.torproject.org/pipermail/tor-talk/2022-January/045795.html) [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-11-01&end=2022-01-31&country=fi&events=off)|X|
|2021-12-22 05:15:04|2021-12-22 05:17:15||snowflake|Rebooted the Snowflake bridge to increase the number of CPUs from 4 to 8.|[issue](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40085)||
|2021-12-20|||snowflake|Release of Tor Browser 11.0.3, with an altered DTLS fingerprint in Snowflake to counteract blocking in Russia.|[blog post](https://blog.torproject.org/new-release-tor-browser-1103/) [issue](https://bugs.torproject.org/tpo/applications/tor-browser-build/40393) [NTC post](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/59)||
|2021-12-14|||snowflake|Release of Tor Browser 11.5a1, with an altered DTLS fingerprint in Snowflake to counteract blocking in Russia.|[blog post](https://blog.torproject.org/new-release-tor-browser-115a1/) [issue](https://bugs.torproject.org/tpo/applications/tor-browser-build/40393) [NTC post](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/59)||
|2021-12-13||ru||The fraction of networks in Russia blocking Tor, measured by OONI, increases from about 20% to about 50%.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-11-01&end=2021-12-31&country=ru)||
|2021-12-08|||obfs4|Release of Tor Browser 11.0.2, containing a new default obfs4 bridge "deusexmachina".|[blog post](https://blog.torproject.org/new-release-tor-browser-1102/) [issue](https://bugs.torproject.org/tpo/applications/tor-browser-build/40386)||
|2021-12-08||ru||The Tor Project web server block is expanded from *.www.torproject.org to *.torproject.org.|[record](https://reestr.rublacklist.net/record/3845366/) [GitLab comment](https://bugs.torproject.org/tpo/community/support/40050#note_2765257) [NTC comment](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/40) [zapret-info diff](https://github.com/zapret-info/z-i/commit/7ef5c6ab4e1a71d2a659282cc5c066736adbf7dd#diff-9e35c803ddf71fefd2643c4ef35e1b76a1c340b257b9c27784048602a42e89b1)||
|2021-12-07||ru||The www.torproject.org web server is added to the registry of blocked domain names in Russia, by IP addresses and by hostname *.www.torproject.org.|[record](https://reestr.rublacklist.net/record/3845366/) [GitLab comment](https://bugs.torproject.org/tpo/community/support/40050#note_2765035) [NTC comment](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/30) [zapret-info diff](https://github.com/zapret-info/z-i/commit/2d81831c4ea5723d8896d2e6b9c3303ab8ba7470#diff-9e35c803ddf71fefd2643c4ef35e1b76a1c340b257b9c27784048602a42e89b1R12738) [OONI report](https://ooni.org/post/2021-russia-blocks-tor/#blocking-of-the-tor-project-website)||
|2021-12-01|2021-12-13|ru|meek|Blocking of the IP address of the meek-azure front domain in certains ISPs in Russia, part of a wider phenomenon of blocking Tor beginning 2021-12-01.|[post about start (2021-12-03)](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/3) [post about end (2021-12-13)](https://bugs.torproject.org/tpo/community/support/40050#note_2766036) [post about end (2021-12-15)](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/79) [post about end (2021-12-26)](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477/97)||
|2021-12-01|ongoing|ru||Blocking of Tor directory authorities, relays, default obfs4 bridges, meek-azure, and Snowflake in some ISPs in Russia. There was a temporary cease of blocking for less than a day starting on 2021-12-08.|[NTC thread](https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477) [BBS thread](https://github.com/net4people/bbs/issues/97) [issue](https://bugs.torproject.org/tpo/community/support/40050) [blog post](https://blog.torproject.org/tor-censorship-in-russia/) [OONI report](https://ooni.org/post/2021-russia-blocks-tor/#blocking-of-the-tor-network)||
|2021-11-22|2022-11-28|bf||Shutdown of mobile Internet in Burkina Faso.|[article](https://www.reuters.com/world/africa/burkina-faso-lifts-internet-suspension-day-after-violent-protest-2021-11-28/) [relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-08-10&end=2022-03-15&country=bf) [tweet](https://twitter.com/burkina24/status/1462913256520097793)||
|2021-11-17|2022-02-02||obfs4|Run a Tor Bridge campaign, offers rewards for running obfs4 bridges.|[blog post about start](https://blog.torproject.org/run-a-bridge-campaign/) [blog post about end](https://blog.torproject.org/wrapping-up-bridges-campaign/)||
|2021-11-08||||Removal of roughly 600 "KAX17" non-exit relays.|[mailing list post](https://lists.torproject.org/pipermail/tor-relays/2021-November/019980.html) [relay graph](https://metrics.torproject.org/networksize.html?start=2021-09-15&end=2021-12-15) [article](https://nusenu.medium.com/is-kax17-performing-de-anonymization-attacks-against-tor-users-42e566defce8)||
|2021-11-08|||onion|Release of Tor Browser 11.0. Final deprecation of v2 onion services.|[blog post](https://blog.torproject.org/new-release-tor-browser-11-0/) [deprecation timeline](https://blog.torproject.org/v2-deprecation-timeline/) [graph](https://metrics.torproject.org/hidserv-dir-onions-seen.html?start=2021-07-01&end=2021-12-31)||
|2021-11-07||ni||General elections in Nicaragua. Temporary increase in relay users.|[article](https://www.reuters.com/world/americas/nicaraguas-ortega-coasting-victory-after-contentious-election-2021-11-08/) [Wikipedia](https://en.wikipedia.org/wiki/2021_Nicaraguan_general_election) [relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-08-10&end=2022-01-15&country=ni)||
|2021-10-29||tm|relay|Further decrease of relay users in Turkmenistan.|[comment](https://bugs.torproject.org/tpo/community/support/40030#note_2759213) [discussion](http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-11-04-15.59.log.html#l-55)|X|
|2021-10-25|2021-11-18 13:00:00|sd||Internet shutdown in Sudan.|[article](https://qz.com/africa/2079718/sudan-shuts-down-the-internet-after-a-military-coup/) [article](https://www.accessnow.org/sudan-internet-shutdown-military-coup/) [Cloudflare Radar blog post](https://blog.cloudflare.com/sudan-internet-back-25-days/) [relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-08-15&end=2021-12-15&country=sd&events=off)||
|2021-10-24||tm|snowflake|Snowflake users in Turkmenistan drop to zero, possibly as a result of blocking of the broker's domain-fronting channel.|[issue](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/40024) [comment](https://bugs.torproject.org/tpo/community/support/40030#note_2759213) [discussion](http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-11-04-15.59.log.html#l-55)|X|
|2021-10-24||uz||National elections in Uzbekistan.|[article](https://www.aljazeera.com/news/2021/10/25/uzbek-president-secures-second-term-in-landslide-election-victory) [relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-07-31&end=2022-01-01&country=uz&events=off)||
|2021-10-08|2021-11-14|nl|relay|Temporary quintupling of direct users from the Netherlands.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-08-01&end=2022-01-07&country=nl)|X|
|2021-10-03|ongoing|eg|relay|Increase of relay users in Egypt.|[Twitter thread](https://twitter.com/RamyRaoof/status/1446503307695075328) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-08-01&end=2021-11-15&country=eg&events=off)|X|
|2021-10-01|2021-10-07|by|relay|Increase of users in Belarus, relay only. According to OONI data, the Tor Project website was [unblocked](https://explorer.ooni.org/search?until=2021-10-08&since=2021-09-30&test_name=web_connectivity&probe_cc=BY&domain=www.torproject.org) and Tor direct connections were accessible for a few days and, then, it was blocked again.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-07-09&end=2021-11-09&country=by&events=off) [OONI Tor test](https://explorer.ooni.org/search?until=2021-10-08&since=2021-09-08&test_name=tor&only=anomalies&probe_cc=BY)||
|2021-09-22 18:00:00|2021-10-07 11:00:00|||Experiment to investigate the accuracy of relays' advertised bandwidth.|[status.torproject.org](https://status.torproject.org/experiments/2021-09-23-relay-speed-test/) [mailing list post](https://lists.torproject.org/pipermail/tor-relays/2021-September/019828.html) [advertised bandwidth graph](https://metrics.torproject.org/bandwidth.html?start=2021-08-01&end=2021-11-01)||
|2021-08-31|2021-09-12|br|relay|Increase of users in Brazil, relay only, due protests.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-08-01&end=2021-10-15&country=br&events=off) [article](https://www.nytimes.com/2021/09/07/world/americas/bolsonaro-brazil-protests.html)||
|2021-08-27 17:00:00|2021-09-08 13:00:00|||Experiment to investigate the accuracy of relays' advertised bandwidth.|[status.torproject.org](https://status.torproject.org/experiments/2021-08-26-relay-speed-test/) [mailing list post](https://lists.torproject.org/pipermail/tor-relays/2021-August/019793.html) [advertised bandwidth graph](https://metrics.torproject.org/bandwidth.html?start=2021-08-01&end=2021-11-01)||
|2021-08-12|2021-08-14|zm||Block of social media websites and WhatsApp during the national elections. Increase in the number of users.|[article](https://techcrunch.com/2021/08/12/whatsapp-and-other-social-media-platforms-restricted-in-zambia-amidst-ongoing-elections/) [ticket](https://bugs.torproject.org/tpo/community/support/40032) [OONI report](https://ooni.org/post/2021-zambia-social-media-blocks-amid-elections/) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-05-18&end=2021-08-16&country=zm&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-05-18&end=2021-08-16&country=zm)||
|2021-08-12|||ipv4 ipv6|geoip and geoip6 databases updated to "IPFire Project Thu, 12 Aug 2021 05:51:15 GMT" (`geoip-db-digest B3A9770171D3060502B7F13C0618BE109B92DF6C`, `geoip6-db-digest 410B70763FC675B3622264FAA0FC67B78FDE30C2`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=eca5b622131aae2d316b3c0a72e9ac39e5543232)||
|2021-08-08||ua|relay|Large increase of relay users in Ukraine. Bridge users unaffected.|[comment](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/22369#note_2748037) [anti-censorship team discussion](http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-08-19-16.00.log.html#l-97) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-07-01&end=2021-10-01&country=ua) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-07-01&end=2021-10-01&country=ua)|X|
|2021-07-22|2021-07-31|tm|relay|Decrease in relay users by 75% in Turkmenistan, following a period of elevated usage that began in early 2021.|[ticket](https://bugs.torproject.org/tpo/community/support/40030) [anti-censorship team discussion](http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-08-12-16.00.log.html#l-46) [NTC thread](https://ntc.party/t/recent-drop-in-tor-users-from-turkmenistan-testers-wanted/1192)|X|
|2021-07-06 16:56:37|||snowflake|Release of Tor Browser 10.5, first stable release that includes Snowflake.|[blog post](https://blog.torproject.org/new-release-tor-browser-105)||
|2021-06-20|2021-06-24|dz||Social media blocking during national high school exams.|[SMEX](https://twitter.com/SMEX/status/1407025517346406407)||
|2021-06-15 17:02:25|2021-06-15 17:10:50||snowflake|Snowflake bridge down for scheduled upgrade.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40051#note_2739495)||
|2021-06-12 11:12:42|2021-06-13 12:55:30||snowflake|Outage of Snowflake bridge.|[issue](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40051)||
|2021-06-10 16:00:00|ongoing|||Experiment to test latencies between relays.|[status.torproject.org](https://status.torproject.org/experiments/2021-06-11-network-latency-measurements/) [post announcing start](https://lists.torproject.org/pipermail/tor-relays/2021-May/019672.html)||
|2021-06-10|||ipv4 ipv6|geoip and geoip6 databases updated to "IPFire Project Thu, 10 Jun 2021 05:17:29 GMT" (`geoip-db-digest 900E9BD6C8B8679A1539F7F316974E86618038B2`, `geoip6-db-digest 456BCA0796A27F8C80674EE89B1323F8310BED39`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=520d5c108f84e8afedc16ab057cbfe5abfab6df2)||
|2021-06-04|ongoing|ng||Block of Twitter in Nigeria. Increase in the number of bridge users.|[article](https://edition.cnn.com/2021/06/04/africa/nigeria-suspends-twitter-operations-intl/) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-05-01&end=2021-07-31&country=ng) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-05-01&end=2021-07-31&country=ng)||
|2021-05-17 16:00:00|2021-06-05 00:00:00|||Experiment to test the accuracy of relays' advertised bandwidth estimation.|[status.torproject.org](https://status.torproject.org/experiments/2021-05-28-relay-speed-test/) [post announcing start](https://lists.torproject.org/pipermail/tor-relays/2021-May/019649.html) [post announcing end](https://lists.torproject.org/pipermail/tor-relays/2021-June/019680.html) [advertised bandwidth graph](https://metrics.torproject.org/bandwidth.html?start=2021-04-01&end=2021-06-30) [relay flags graph](https://metrics.torproject.org/bandwidth-flags.html?start=2021-04-01&end=2021-06-30)||
|2021-05-14|2021-05-18||meek|The number of meek users temporarily drops to < 10.|[graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2021-04-15&end=2021-05-31&transport=meek)|X|
|2021-05-12 14:13:56|2021-06-21 14:22:24||snowflake|Error in stats collection at the Snowflake bridge; user count is erroneously zero.|[merge request](https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/43) [comment on start](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40033#note_2735468) [comment on end](https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/43#note_2740276) [user count graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2021-03-15&end=2021-07-15&transport=snowflake)||
|2021-05-07|||ipv4 ipv6|geoip and geoip6 databases updated to "IPFire Project Fri, 07 May 2021 05:18:14 GMT" (`geoip-db-digest AE864EA783E3776E4950859B5B35F412977F876F`, `geoip6-db-digest 7008D77E958D919E432AAE7F5C2002B14604FFFE`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=621f8a304abf3d6d9c1083afe6ca571456cee38a)||
|2021-05-05||tm|meek|Drop in meek users in Turkmenistan, from over 200 to almost zero.|[bridge user and transport graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2020-07-01&end=2021-08-12&country=tm)|X|
|2021-05-03 02:35:19|2021-05-03 13:09:22||snowflake|Outage of snowflake bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40033#note_2734158)||
|2021-04-13|||ipv4 ipv6|geoip and geoip6 databases updated to "IPFire Project Tue, 13 Apr 2021 05:11:07 GMT" (`geoip-db-digest D63E30D25E7767178177C53A0248083011B4202A`, `geoip6-db-digest 891E8F6FBC7973144E335F0D815B5AF6B6DDF74B`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=32f5ad76653a4ff0a38a244cf78f02de921a5302)||
|2021-04-09||tm|obfs4|Turkmenistan blocks the default obfs4 bridge hopperlab, the last remaining obfs4 bridge at the time.|[comment](https://bugs.torproject.org/tpo/community/support/40030#note_2747442)||
|2021-04-01|ongoing|mm||Shutdowns of wireless broadband in Myanmar.|[Access Now post](https://www.accessnow.org/update-internet-access-censorship-myanmar/)||
|2021-03-16|||ipv4 ipv6|Release of tor 0.3.5.14, 0.4.4.8, and 0.4.5.7. Changes the source of geolocation databases from Maxmind to IPFire.|[blog post](https://blog.torproject.org/new-releases-with-security-fixes-tor-03514-0448-and-0457/) [announcement](https://lists.torproject.org/pipermail/tor-announce/2021-March/000216.html) [ticket](https://bugs.torproject.org/tpo/core/tor/40224) [commit](https://gitweb.torproject.org/tor.git/commit/?id=a7b3cb06f527689e3acdcadd63b48794932e02b8)||
|2021-03-14||tm|obfs4|Turkmenistan blocks the default obfs4 bridges PraxedisGuerrero and smallerRichard.|[comment](https://bugs.torproject.org/tpo/community/support/40030#note_2747442)||
|2021-03-12|||ipv4 ipv6|geoip and geoip6 databases updated to "IPFire Project Fri, 12 Mar 2021 05:05:24 GMT" (`geoip-db-digest 7EFC262380D93924340A0000DF78EC4DD3BFC0E5`, `geoip6-db-digest B53EF6F829B6A1B1DD242835B6A23580178FBE13`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=a7b3cb06f527689e3acdcadd63b48794932e02b8)||
|2021-03-11||by|relay|Drop of relay users in Belarus. Bridge users are not affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2020-11-01&end=2021-04-15&country=by) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2020-11-01&end=2021-04-15&country=by)|X|
|2021-03-10||||Fire in the OVHcloud data centers located in Strasbourg takes about 48 relays offline in AS16276.|[OVHcloud advisory](https://www.ovh.ie/news/press/cpl1786.strasbourg-datacentre-latest-information) [Twitter thread](https://twitter.com/0xggus/status/1369741059652194316)||
|2021-03-09 02:00:00|||flashproxy|Decommissioned flash proxy badge server, flashproxy.bamsoftware.com.|||
|2021-03-08 23:23:00|||flashproxy|Decommissioned flash proxy facilitator: server, flashproxy-reg-email poller, and flashproxy-reg-appspot app.|||
|2021-03-08 13:15:03|2021-03-08 14:14:27||snowflake|Outage of the Snowflake bridge.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40033#note_2728274)||
|2021-02-15 02:00:00|2021-04-27 04:00:00|mm||Nightly shutdowns of fixed-line Internet in Myanmar.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-01-01&end=2021-05-01&country=mm) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-01-01&end=2021-05-01&country=mm) [OONI report](https://ooni.org/post/2021-myanmar-internet-blocks-and-outages/#ongoing-nightly-outages) [IODA for start](https://ioda.caida.org/ioda/dashboard#view=inspect&entity=country/MM&lastView=overview&from=1613219264&until=1614774464) [IODA for end](https://ioda.caida.org/ioda/dashboard#view=inspect&entity=country/MM&lastView=overview&from=1618489664&until=1619872064) [Access Now post](https://www.accessnow.org/update-internet-access-censorship-myanmar/) [censorship-analysis issue](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/40016)||
|2021-02-13||by|bridge meek obfs4|Blocking of default obfs4 bridges and email-distributed bridges in Belarus. Relay users are not affected.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/40002) [BBS thread](https://github.com/net4people/bbs/issues/46#issuecomment-782897099) [NTC thread](https://ntc.party/t/shift-in-tor-obfs4-and-meek-users-on-2021-02-13/890) [relay graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-01-01&end=2021-03-15&country=by) [bridge graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2021-01-01&end=2021-03-15&country=by)||
|2021-02-06 02:00:00|2021-02-07 08:00:00|mm||Internet shutdown in Myanmar.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-01-01&end=2021-03-31&country=mm) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-01-01&end=2021-03-31&country=mm) [OONI report](https://ooni.org/post/2021-myanmar-internet-blocks-and-outages/#outage-on-6th-february-2021) [IODA](https://ioda.caida.org/ioda/dashboard#view=inspect&entity=country/MM&lastView=overview&from=1612437274&until=1612782874)||
|2021-01-31 21:00:00|2021-02-01 08:00:00|mm||Partial Internet shutdown after coup in Myanmar.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2021-01-01&end=2021-03-31&country=mm) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2021-01-01&end=2021-03-31&country=mm) [article](https://www.hrw.org/news/2021/02/02/myanmar-military-blocks-internet-during-coup) [IODA](https://ioda.caida.org/ioda/dashboard#from=1611979820&until=1612325600&view=inspect&entity=country/MM&lastView=overview) [OONI report](https://ooni.org/post/2021-myanmar-internet-blocks-and-outages/#outage-on-1st-february-2021)||
|2021-01-27|||snowflake|Deployed version 0.5.3 of the Snowflake WebExtension, with improvements to NAT handling.|[archive](https://archive.org/details/snowflake-webextension-0.5.3) [ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/20) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40030#note_2724438)||
|2021-01-26 23:05:52|||bridge|Release of Tor Browser 10.5a8, which fixes the bug preventing the use of default bridges.|[blog post](https://blog.torproject.org/new-release-tor-browser-105a8) [issue](https://bugs.torproject.org/tpo/applications/tor-browser/40282)||
|2021-01-20 04:12:40|||bridge|Release of Tor Browser 10.5a7, which has a bug preventing the use of default bridges.|[blog post](https://blog.torproject.org/new-release-tor-browser-105a7) [issue](https://bugs.torproject.org/tpo/core/tor/40106) [issue](https://bugs.torproject.org/tpo/applications/tor-browser/40282)||
|2021-01-17|2021-01-21||snowflake|Decrease in measured Snowflake users. May have been caused by a drop of NAT-unrestricted proxies.|[mailing list thread](https://lists.torproject.org/pipermail/anti-censorship-team/2021-January/000133.html) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40030#note_2722715)|X|
|2021-01-13|2021-01-17|ug||Internet shutdown in Uganda during general election.|[OONI report](https://ooni.org/post/2021-uganda-general-election-blocks-and-outage/)||
|2021-01-10|2021-02-03||onion|Large amounts of traffic at directory authorities disrupts consensus, which causes v3 onion services to stop working because of a bug. Tor 0.3.5.13, 0.4.3.8, and 0.4.4.7 have a fix for the bug.|[ticket](https://bugs.torproject.org/tpo/core/tor/40237) [blog post](https://matt.traudt.xyz/posts/tracking-tors-network-wide-v3-onion-service-outages/) [onion service traffic graph](https://metrics.torproject.org/hidserv-rend-relayed-cells.html?start=2020-10-01&end=2021-03-31) [Tor blog post](https://blog.torproject.org/node/1990) [Tor Browser blog post](https://blog.torproject.org/new-release-tor-browser-10010) [status.torproject.org](https://status.torproject.org/issues/2021-01-28-dir-auth/)||
|2021-01-07 16:33:00|||snowflake|Changed the DNS records for snowflake.freehaven.net and snowflake-broker.bamsoftware.com to be CNAME records for the corresponding torproject.net domains, rather than bamsoftware.com, in order to avoid malware warnings.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40028)||
|2021-01-01|ongoing|cn|snowflake|Increased failure to bootstrap using Snowflake from China.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/32657#note_2728218)|X|
|2020-12-17 09:10:00|2020-12-20 15:00:00||snowflake|DDoS attack on Greenhost, where the Snowflake broker and bridge and onionperf instances are hosted.|[2020-12-17 status](https://status.greenhost.net/incidents/19) [2020-12-20 status](https://status.greenhost.net/incidents/20) [anti-censorship-team thread](https://lists.torproject.org/pipermail/anti-censorship-team/2020-December/000129.html)||
|2020-12-05 10:21:31|2020-12-09 19:52:55||meek moat|An update to an Azure CDN edge server TLS certificate causes an outage of meek and Moat. It is fixed by the release of Tor Browser 10.0.6, which updates the built-in public key pinning of obfs4proxy.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/40001) [blog post](https://blog.torproject.org/new-release-tor-browser-1006#comments) [meek graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2020-11-01&end=2020-12-31&transport=meek) [BridgeDB graph](https://metrics.torproject.org/bridgedb-distributor.html?start=2020-11-01&end=2020-12-31) [certificate transparency](https://crt.sh/?q=cd29bc427d93bc4453d129a294cfd5e082eacbf3fe9a19b7718a50422b6e6cc5)||
|2020-11-08 00:53:15|2020-11-09 00:08:55||snowflake|Outage of the snowflake bridge|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/40020)||
|2020-10-27|ongoing|tz|<OR> obfs4|Blocking of Tor and default obfs4 bridges during elections in Tanzania.|[OONI report](https://ooni.org/post/2020-tanzania-blocks-social-media-tor-election-day/#blocking-of-tor)||
|2020-10-13||by||Sudden decrease of relay users in Belarus, from 4000 to 1000, with simultaneous increase of bridge users.|[BBS thread](https://github.com/net4people/bbs/issues/46#issuecomment-783528529) [NTC thread](https://ntc.party/t/possible-tor-block-in-belarus-in-october-2020/891) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2020-09-01&end=2020-11-15&country=by&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2020-09-01&end=2020-11-15&country=by)|X|
|2020-10-05|||snowflake|Deployed version 0.4.2 of the Snowflake WebExtension, with better counting of clients.|[archive](https://archive.org/details/snowflake-webextension-0.4.2) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/33157#note_2710701)||
|2020-09-27|2020-11-10|az||Blocking of social media and instant messaging in Azerbaijan during the 2020 Nagorno-Karabakh war|[OONI/AIW report](https://ooni.org/post/2021-azerbaijan/#tor-and-psiphon) [IPHR/AIW report](https://www.iphronline.org/pulling-the-plug-report.html) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2020-01-01&end=2021-01-01&country=az) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2020-01-01&end=2021-01-01&country=az)||
|2020-08-31|||obfs4|Shutdown of default obfs4 bridge frosty.|[ticket](https://bugs.torproject.org/tpo/applications/tor-browser-build/40066)||
|2020-08-13|||snowflake|Deployed version 0.4.1 of the Snowflake WebExtension, with NAT type detection in the browser.|[archive](https://archive.org/details/snowflake-webextension-0.4.1) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake-webext/13#note_2705805)||
|2020-08-09|2020-08-12|by||Internet shutdowns in Belarus, during protests following a presidential election.|[report](https://ooni.org/post/2020-belarus-internet-outages-website-censorship/#internet-outages-amid-2020-belarusian-presidential-election) [thread](https://github.com/net4people/bbs/issues/46)||
|2020-07-06 17:41:34|||snowflake|Deployed NAT-aware matching at the Snowflake broker.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/34129#note_2685268)||
|2020-06-30 05:00:00|2020-07-23|et||Internet shutdown in Ethiopia. Restrictions were partially lifted 2020-07-15.|[article](https://edition.cnn.com/2020/06/30/africa/ethiopia-singer-killing-sparks-protest-intl/) [article](https://qz.com/africa/1884387/ethiopia-internet-is-back-on-but-oromo-tensions-remain/) [IODA](https://ioda.caida.org/ioda/dashboard#view=inspect&entity=country/ET&lastView=overview&from=1593192460&until=1593797260) [relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2020-06-01&end=2020-07-31&country=et&events=off)||
|2020-06-25|2020-06-25||snowflake|One- or two-day spike in estimated Snowflake users. It resembles the spike that occurred around the time of the Turbo Tunnel release of Tor Browser 9.5a13 on 2020-05-22.|[users graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2020-03-01&end=2020-08-01&transport=snowflake)|X|
|2020-06-02 18:09:48|||snowflake|Release of Tor Browser 10.0a1, the first release with Snowflake for Android.|[blog post](https://blog.torproject.org/new-release-tor-browser-100a1) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/30318)||
|2020-05-22 19:51:29|||snowflake|Release of Tor Browser 9.5a13, the first release with Turbo Tunnel session persistence features for Snowflake. There is a spike in estimated users on 2020-05-21 and 2020-05-22, which appears to be an artifact.|[blog post](https://blog.torproject.org/new-release-tor-browser-95a13) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/34043) [users graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2020-03-01&end=2020-08-01&transport=snowflake)||
|2020-04-23 22:51:49|||snowflake|Redeployed the Snowflake bridge with support for non–Turbo Tunnel clients and KCP–Turbo Tunnel clients, removing support for QUIC–Turbo Tunnel clients.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/33745#note_2595353)||
|2020-02-22 23:51:15|||snowflake|Made the Snowflake bridge stop reporting client IP addresses of 0.0.0.0. This also affects log messages that report how many client connections had an attached IP address.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/33385#note_2595161)||
|2020-02-19 18:03:30|||snowflake|Deployed a Turbo Tunnel–capable Snowflake bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/33336#note_2595068)||
|2020-02-18 16:00:00|2020-02-18 19:15:30||snowflake|Outage of the Snowflake bridge caused by memory exhaustion.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/33364)||
|2019-12-06|||ipv4 ipv6|geoip and geoip6 databases updated to "December 3 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 4974C4F1F6842975999D0774F2636F383312EA2D`, `geoip6-db-digest 2046D67D7BBE67AFF12E1CEDD9F9083AB5E3DFAC`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b7b467d3af7b32a5e2ae218dd9344c303a0a4935)||
|2019-11-16|2019-11-23|ir||Internet blackout in Iran.|[report](https://ooni.org/post/2019-iran-internet-blackout/) [NTC thread](https://ntc.party/t/a-new-kind-of-censoship-in-iran/237)||
|2019-11-14 21:23:00|||ipv6 snowflake|Changed DNS to point to the IPv6-enabled Snowflake broker.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/29258#note_2592892)||
|2019-11-14 20:22:29|||snowflake|Deployed webext-0.1.0 of the Snowflake proxy (which uses a new proxy–broker protocol) to snowflake.torproject.org.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/29207#note_2592852)||
|2019-11-13 18:48:28|||snowflake|Released version 0.1.0 of the Snowflake extension for Firefox and Chrome, using a new proxy–broker protocol.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/29207#note_2592850)||
|2019-11-13 16:47:02|||snowflake|Restarted the broker with a new proxy–broker protocol.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/29207#note_2592849)||
|2019-11-09|||ipv4 ipv6|geoip and geoip6 databases updated to "November 6 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 967E4D14ADF0C9439C31FB7B666537A0551C1E6A`, `geoip6-db-digest BD6E89A28801FA447693EDEC6D47ECCA03B8CD20`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=853b6ad0950e8014784109879fa058fb0cb90dc8)||
|2019-10-28|||snowflake|Version 0.0.13 of the Snowflake extension is released, decreasing the poll frequency to once every 300 s. The standalone proxy-go instances still poll once every 5 s.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/32129#note_2594650)||
|2019-10-17 19:30:42|||snowflake|Pointed snowflake-broker.torproject.net (one of three domain names for the Snowflake broker) to a new broker instance set up with IPv6. Metrics unintentionally start being collected from the new instance, instead of the old instance that was still in use.|[ticket](https://bugs.torproject.org/tpo/tpa/team/32128) [ticket](https://bugs.torproject.org/tpo/network-health/metrics/collector/32231)||
|2019-10-03||cn|obfs4|The new default bridge 193.11.166.194 is already blocked by the GFW – two days after the [Tor Browser alpha release](https://blog.torproject.org/new-release-tor-browser-90a7) that shipped with it. The block may have happened sooner, though. We only tested the bridge just now.|[ticket](https://bugs.torproject.org/tpo/applications/tor-browser/31164)||
|2019-10-02|||ipv4 ipv6|geoip and geoip6 databases updated to "October 1 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 34ABC09019FAB09BA3083B3663EC0B807FC16151`, `geoip6-db-digest F4D3BEC6294DF7FAEAEE5966CC6706CF91CE9BC4`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=90de776ea9c173b560fedf01199e798dfe007cd9)||
|2019-10-01|||snowflake|Release of Tor Browser 9.0a7, the first release that has Snowflake for Windows.|[blog post](https://blog.torproject.org/new-release-tor-browser-90a7) [ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25483)||
|2019-08-06|2019-08-09 01:00:00|||Experiment to test the accuracy of relays' advertised bandwidth estimation.|[description of experiment](https://lists.torproject.org/pipermail/tor-relays/2019-July/017535.html) [post announcing start](https://lists.torproject.org/pipermail/tor-relays/2019-August/017599.html) [post announcing end](https://lists.torproject.org/pipermail/tor-relays/2019-August/017617.html) [advertised bandwidth graph](https://metrics.torproject.org/bandwidth.html?start=2019-07-01&end=2019-09-01) [relay flags graph](https://metrics.torproject.org/bandwidth-flags.html?start=2019-07-01&end=2019-09-01)||
|2019-07-27 15:53:00|||snowflake|The Snowflake proxy hosted at snowflake.torproject.org is updated, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/31250#note_2594093)||
|2019-07-27|||snowflake|Deployed version 0.0.7 of the Snowflake WebExtension for Chrome, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/31250#note_2594090)||
|2019-07-26|||flashproxy snowflake|Cupcake 2.0 is released, now working with Snowflake rather than flash proxy.|[Chrome Web Store page](https://chrome.google.com/webstore/detail/cupcake/dajjbehmbnbppjkcnpdkaniapgdppdnc)||
|2019-07-26|||snowflake|Deployed version 0.0.8 of the Snowflake WebExtension for Firefox, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/31250#note_2594083)||
|2019-07-23|||snowflake|The broker domain name snowflake-broker.bamsoftware.com is blocked by Google Safe Browsing, preventing the Snowflake web browser extension from working.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/31230) [comment noting decrease in proxies](https://web.archive.org/web/20200619120450/https://trac.torproject.org/projects/tor/ticket/31200?cversion=0)||
|2019-07-18|2019-08-07 02:50:00|kz||The Kazakh ISP KazTelecom does man-in-the-middle of TLS connections.|[Censored Planet report](https://github.com/net4people/bbs/issues/6#issuecomment-519131315) [post about end](https://github.com/net4people/bbs/issues/6#issuecomment-519131315)||
|2019-07-03|||snowflake|Deployed version 0.0.1 of the Snowflake WebExtension for Chrome.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/30999#note_2593718)||
|2019-07-02|2019-08-26|ir|<OR> bridge relay|Relays in Iran are reported to be unblocked once again, and user numbers recover to about 25% of the maximum they had reached during the previous period of unblocking. They then drop precipitously, and <OR> bridge users increase.|[ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/30636) [comment](https://bugs.torproject.org/tpo/network-health/metrics/analysis/30636#note_2568924) [comment](https://bugs.torproject.org/tpo/network-health/metrics/analysis/30636#note_2568925)||
|2019-06-26|||snowflake|Deployed version 0.0.1 of the Snowflake WebExtension for Firefox.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/30931#note_2593598)||
|2019-06-21|ongoing|mm||Internet shutdown in parts of Myanmar.|[report](https://reliefweb.int/report/myanmar/myanmar-end-internet-shutdown-rakhine-chin-states) [2020 report](https://public.opentech.fund/documents/The_Rise_of_Online_Censorship_and_Surveillance_in_Myanmar.pdf#page=6)||
|2019-06-20|||obfs4|A call to set up new obfs4 bridges is posted to the tor-relays mailing list.|[mailing list thread](https://lists.torproject.org/pipermail/tor-relays/2019-June/017419.html) [thread continues](https://lists.torproject.org/pipermail/tor-relays/2019-July/017477.html)||
|2019-06-11|||ipv4 ipv6|geoip and geoip6 databases updated to "June 10 2019 Maxmind GeoLite2 Country" (`geoip-db-digest A131E1F283F4AD307248B03A70B0413E81ADF2A4`, `geoip6-db-digest 0EFF3EE1E22927EC9A77BFFAFD703F3A5B32FA79`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=0ec4ebd00d5ccd75068348700c641dd17837efe9)||
|2019-05-28||||Failure of network equipment at site of op-ab OnionPerf instance (equipment now replaced)|[onionperf timeouts graph](https://metrics.torproject.org/torperf-failures.html?start=2019-05-23&end=2019-06-02&server=public&filesize=50kb)||
|2019-05-22 10:18:01|||fte|Release of Tor Browser 9.0a1, removes support for FTE.|[blog post](https://blog.torproject.org/new-release-tor-browser-90a1) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/30319)||
|2019-05-17|||ipv4 ipv6|geoip and geoip6 databases updated to "May 13 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 35DFDA2D06D2A0467EF37D60A67B438B11952B74`, `geoip6-db-digest C0193A1D086819353FABBF70AADB15866B7B2525`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=4e262196a88d2a7d3be059d075f53a6f182b2773)||
|2019-05-16|2019-06-23|ir|relay|Tor becomes directly accessible in Iran, leading to an explosion in relay users up to about 1.5 million, before being blocked again.|[ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/30636) [comment about end](https://bugs.torproject.org/tpo/network-health/metrics/analysis/30636#note_2568918) [tor-talk thread](https://lists.torproject.org/pipermail/tor-talk/2019-June/045221.html) [Reddit thread](https://www.reddit.com/r/TOR/comments/bw4byr/surge_in_users/) [comment](https://bugs.torproject.org/tpo/network-health/metrics/analysis/30636#note_2568923) [Reddit thread](https://www.reddit.com/r/TOR/comments/c4lwdj/today_iran_government_blocked_tor_bootsraping_in/)||
|~2019-05-01||cn|snowflake|China blocks the default Snowflake proxies.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/30350)||
|2019-04-29||||Network equipment failure at site of op-ab OnionPerf instance|[performance graph](https://metrics.torproject.org/torperf.html?start=2019-04-25&end=2019-05-04&server=public&filesize=50kb)||
|2019-04-28|2019-04-29|bj||Social media blocking and Internet blackout during parliamentary elections in Benin.|[OONI report](https://ooni.io/post/2019-benin-social-media-blocking/#social-media-blocking)||
|2019-04-27|ongoing|ru|relay|Relay users increase by about 100K, in an apparent weekly cycle. Bridge users are not similarly affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2019-03-01&end=2019-06-15&country=ru) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2019-03-01&end=2019-06-15&country=ru) [tor-talk thread](https://lists.torproject.org/pipermail/tor-talk/2019-June/045221.html) [Reddit thread](https://www.reddit.com/r/TOR/comments/bw4byr/surge_in_users/)|X|
|2019-04-23|ongoing|lk||Sri Lanka blocks Facebook, WhatsApp, Instagram, YouTube after bombings.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2019-03-15&end=2019-05-15&country=lk&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2019-03-15&end=2019-05-15&country=lk) [article](https://gizmodo.com/sri-lanka-blocks-facebook-whatsapp-after-easter-bombin-1834199629)||
|2019-04-17||||Tor browser update pings roughly double.|[graph](https://metrics.torproject.org/webstats-tb-platform.html?start=2019-04-01&end=2019-05-01) [metrics-team thread](https://lists.torproject.org/pipermail/metrics-team/2019-May/001053.html)|X|
|2019-04-16 17:53:00|2019-04-16 22:23:00||snowflake|Outage of Snowflake fallback proxy-go instances, caused by a failure to restart after segregating old logs.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/30205)||
|2019-04-03|||ipv4 ipv6|geoip and geoip6 databases updated to "April 2 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 62A97D4DEBF76A5CE5C232B95BBF05B191EB8AAA`, `geoip6-db-digest 66620E57A8427C53D6084B3229807DC320CDC3D0`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=54e249e269c63fd5f003dd8c15faa6a13902f8e4)||
|2019-03-22 06:25:54|2019-03-22 18:34:02||snowflake|Outage of the Snowflake broker, caused by a full disk.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/29861)||
|2019-03-07|2019-03-30|ve||Power outages in Venezuela.|[Wikipedia](https://en.wikipedia.org/wiki/2019_Venezuelan_blackouts) [relay users graph](https://metrics.torproject.org/userstats-relay-country.html?start=2019-02-01&end=2019-04-30&country=ve&events=off) [IODA](https://ioda.caida.org/ioda/dashboard#view=inspect&entity=country/VE&lastView=overview&from=1551634260&until=1552843893)||
|2019-03-06|||ipv4 ipv6|geoip and geoip6 databases updated to "March 4 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 5B90C2F06292D8237A5C77E27ED4ABABF4AE0684`, `geoip6-db-digest E971FCA4A89F6C685928FF9371D1BF7A2484F4CA`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=2e74edb53ef9ac417d8424a0785af839f83791ca)||
|2019-02-16|ongoing|by|relay|Increase of relay users in Belarus.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-07-01&end=2019-06-01&country=by&events=off) [mailing list post](https://lists.torproject.org/pipermail/metrics-team/2019-May/001064.html)|X|
|2019-02-12|||ipv4 ipv6|geoip and geoip6 databases updated to "February 5 2019 Maxmind GeoLite2 Country" (`geoip-db-digest DDAA25B4425EAA45EE8E92A6531CD3246C8E989A`, `geoip6-db-digest 0368FA722D90026E60BD60A26F615791A7A53D21`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=a3f9ddcf033881ac78cda0aa7e6a9fd7195868cc)||
|2019-02-07 23:45:00|||snowflake|Disabled the 3 proxy-go instances that were pointing at the former broker hosted on App Engine.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/29308#note_2592979)||
|2019-01-14|2019-01-21|zw||Internet shutdown and blocking of Facebook, WhatsApp, and Twitter in Zimbabwe.|[article](https://www.bbc.com/news/world-africa-46917259) [OONI report](https://ooni.org/post/zimbabwe-protests-social-media-blocking-2019/)||
|2019-01-07|||bridge|Release of tor 0.3.5.7, 0.3.4.10, and 0.3.3.11. Fixes the bug, present since 0.3.5.1-alpha/0.3.4.1-alpha, of idle bridges being unuseful.|[comment](https://bugs.torproject.org/tpo/core/tor/28717#note_2489603) [ticket](https://bugs.torproject.org/tpo/core/tor/28912) [blog post](https://blog.torproject.org/new-releases-tor-0357-03410-and-03311) [ticket](https://bugs.torproject.org/tpo/anti-censorship/bridgedb/29184)||
|2019-01-07|||ipv4 ipv6|geoip and geoip6 databases updated to "January 3 2019 Maxmind GeoLite2 Country" (`geoip-db-digest 2B8A70B399CF8B471289A4DB52947DE965D8DE5F`, `geoip6-db-digest FEA33E6F398DF67252F41DDD3D010E69B33D544E`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=445d6750f79c266c0e21e7a31e6d5f872f8a4ec8)||
|2019-01-07 07:00:00|2019-01-08 11:00:00|ga||Internet shutdown in Gabon following a coup attempt.|[OONI report](https://ooni.torproject.org/post/gabon-internet-disruption/) [NetBlocks report](https://netblocks.org/reports/evidence-of-gabon-full-internet-shutdown-coup-attempt-dQ8oo18n)||
|2018-12-20|ongoing|sd||Protests and social media blocks in Sudan.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-11-15&end=2019-01-15&country=sd&events=off) [Access Now post](https://www.accessnow.org/amid-countrywide-protest-sudan-shuts-down-social-media-on-mobile-networks/) [Psiphon users](https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1670)||
|2018-12-18|2018-12-21|ae|<OR>|Reported blocking of vanilla Tor in the UAE.|[comment](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/27723#note_2601570)||
|2018-12-05|||ipv4 ipv6|geoip and geoip6 databases updated to "December 5 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 0684E08BDC01ABB41A717E9C55BDEB21531CFAC8`, `geoip6-db-digest AFFAD1475879D57B1C1EA119141EFA0E57547290`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=57798eb1cb7a5c6e5b5a82625d986757be569d75)||
|2018-11-26|2018-11-28|||Outage of the onionperf-us instance, caused by a Greenhost east coast VPS migration.|[mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-November/000967.html)||
|2018-11-26|2018-11-28||flashproxy|Outage of the flash proxy badge hosting server, flashproxy.bamsoftware.com, caused by a Greenhost east coast VPS migration.|||
|2018-11-19|2018-11-27|||Slow-running processes on the metrics host cause an observed drop in the overall relay bandwidth graph.|[mailing list thread](https://lists.torproject.org/pipermail/metrics-team/2018-December/000971.html)||
|2018-11-16 15:11:28|2018-11-22 04:00:00||snowflake|A full disk stops the Snowflake bridge and fallback proxies from working.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/28390)||
|2018-11-11|||ipv4 ipv6|geoip and geoip6 databases updated to "November 6 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 603BE8A0CA1B7164D76DBC75A280C9CA0A556F65`, `geoip6-db-digest 1CEF662539C0D91EC07A7C5C13134E3317B451E4`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=5ba3d09a89502963029483422dc41abbd356cabb)||
|2018-10-25|2018-10-28||relay|Gap in observed number of relay users, caused by the estimated fraction of reporting relays exceeding 100%.|[metrics-team post](https://lists.torproject.org/pipermail/metrics-team/2018-November/000936.html) [ticket](https://bugs.torproject.org/tpo/network-health/metrics/statistics/28305) [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-10-01&end=2018-11-01&country=all&events=off) [archived graph](https://web.archive.org/web/20181104023227/https://metrics.torproject.org/userstats-relay-country.html?start=2018-10-01&end=2018-11-01&country=all&events=off)||
|2018-10-10|||ipv4 ipv6|geoip and geoip6 databases updated to "October 9 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 76907A8345DA84CC724CDD573B6E08F6A089FEEB`, `geoip6-db-digest 5852AB4D3A96D7526DD47D5573CB4FA32BE4ECEB`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=119df9c1c0781e379bc83e06b9c4cb6417b50a2f)||
|2018-09-26|ongoing||fte|Outage of default FTE bridge 128.105.214.162:8080.|[comment](https://bugs.torproject.org/legacy/trac/28521#note_2305473)||
|2018-09-26|ongoing||fte|Outage of default FTE bridge 128.105.214.163:8080.|[comment](https://bugs.torproject.org/legacy/trac/28521#note_2305473)||
|2018-09-18|||bridge|Release of tor 0.3.5.1-alpha, containing a bug that makes idle bridges unuseful.|||
|2018-09-15|2018-09-16|ae|obfs4|Reported blocking of obfs4 in the UAE.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/27723) [comment](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/27723#note_2601557)||
|2018-09-11|||ipv4 ipv6|geoip and geoip6 databases updated to "September 6 2018 Maxmind GeoLite2 Country" (`geoip-db-digest C9118A0D763E069B890674A4D5000A3DB846746B`, `geoip6-db-digest 8A46B41B2AE16F3705C67DEECD20EAA50B043A51`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=19429fac23734070933591774d2436bf92896297)||
|2018-09-10|||bridge|Release of tor 0.3.4.8, 0.2.9.17, 0.3.2.12, and 0.3.3.10. 0.3.4.8, containing a bug that makes idle bridges unuseful, becomes the stable release.|[blog post](https://blog.torproject.org/new-release-tor-0348-also-other-stable-updates-02917-03212-and-03310)||
|2018-08-09|||ipv4 ipv6|geoip and geoip6 databases updated to "August 7 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 4C2E4FF8220FFFB4989564728701016DF705BCBF`, `geoip6-db-digest F3F5C576BF3E8D5FD9F6F33603D7BFD64DEAA8B5`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=fe19b40fe9e2f78caf6f58bb3cc627a6fbb0e2c5)||
|2018-08-04 19:00:00|2018-08-05 17:00:00|||Collector was missing consensuses. They were recovered via recent relay consensus diffs.|[metrics-team thread](https://lists.torproject.org/pipermail/metrics-team/2018-August/000869.html) [tor-relays thread](https://lists.torproject.org/pipermail/tor-relays/2018-August/015850.html)||
|2018-07-29|2018-08-08|bd||Protests over road safety in Dhaka, Bangladesh. Reports of mobile network throttling and blocking of Facebook.|[New York Times article](https://www.nytimes.com/2018/08/05/world/asia/bangladesh-students-protests.html) [Daily Star article on throttling](https://www.thedailystar.net/country/bangladesh-mobile-internet-speed-brought-down-across-for-24hrs-1615909) [NetBlocks report](https://netblocks.org/reports/bangladesh-internet-shutdown-student-protests-jDA37KAW)||
|2018-07-28|ongoing|tr|relay|Another jump of relay users in Turkey, from 5k to about 30k.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-05-01&end=2018-09-15&country=tr) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-05-01&end=2018-09-15&country=tr)|X|
|2018-07-21|||bridge|The estimated number of bridge users becomes available again, following the introduction of the new bridge authority Serge on 2018-07-13. The stats took about a week to reappear because of the discontinuity in bridge reporting affecting the estimated fraction of reporting bridges.|[mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-July/000866.html) [graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-06-01&end=2018-09-01&country=all)||
|2018-07-20|2019-05-02||onion|The number of v2 onion services increases from 70k to 100k.|[comment](https://bugs.torproject.org/tpo/network-health/metrics/analysis/26081#note_2568793)|X|
|2018-07-15 16:25:34|||snowflake|Made the Snowflake bridge report to the new Serge bridge authority.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/26783#note_2592418)||
|2018-07-14 20:21:37|||bridge|Release of Tor 0.2.9.16, 0.3.2.11, 0.3.3.9, and 0.3.4.5-rc. Switches bridge authority from Bifroest to [Serge](https://metrics.torproject.org/rs.html#details/BA44A889E64B93FAA2B114E02C2A279A8555C533). The number of bridges begins counting up from zero as bridges are upgraded. The estimated number of bridge users remained unavailable until 2018-07-21 because of the discontinuity.|[announcement](https://lists.torproject.org/pipermail/tor-relays/2018-July/015681.html) [ticket](https://bugs.torproject.org/tpo/core/tor/26771) [blog post](https://blog.torproject.org/new-release-tor-0339-bridge-authority-update) [number of bridges graph](https://metrics.torproject.org/networksize.html?start=2018-06-01&end=2018-09-01)||
|2018-07-14|2018-07-25|iq||Protests, Internet shutdowns, and social media blocks in Iraq.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-06-01&end=2018-09-01&country=iq) [NetBlocks post](https://netblocks.org/reports/study-shows-extent-of-iraq-internet-shutdown-and-social-media-restrictions-during-protests-zPyXjzAE) [NRT article about end](http://www.nrttv.com/EN/News.aspx?id=2810&MapID=1) [Psiphon users](https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1729)||
|2018-07-13 13:29:39|||bridge|The replacement bridge authority Serge begins publishing bridge descriptors.|[ticket](https://bugs.torproject.org/tpo/core/tor/26771) [ticket](https://bugs.torproject.org/tpo/network-health/metrics/collector/26786) [number of bridges graph](https://metrics.torproject.org/networksize.html?start=2018-06-01&end=2018-09-01)||
|2018-07-06 18:09:03|||bridge|The bridge authority Bifroest stops publishing bridge descriptors. Bridge stats are unavailable until 2018-07-13 and the introduction of a new bridge authority.|[ticket](https://bugs.torproject.org/tpo/network-health/metrics/onionoo/26711) [ticket](https://bugs.torproject.org/tpo/core/tor/26771) [mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-July/000863.html) [number of bridges graph](https://metrics.torproject.org/networksize.html?start=2018-06-01&end=2018-09-01)||
|2018-07-06|||ipv4 ipv6|geoip and geoip6 databases updated to "July 3 2018 Maxmind GeoLite2 Country" (`geoip-db-digest CFFD7B0544879150A31F966E83DBB7DDDFA16F49`, `geoip6-db-digest B25710F60CB23F0C76F58AFB0A26A26ACB701BB2`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=9faa28b60e5012549a2ea207028db655257d3a74)||
|2018-07-04 07:00:20|2018-07-06 05:36:08||snowflake|Outage of the Snowflake bridge, caused by a full disk.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/26661)||
|2018-07-01|ongoing|ug||A social media tax takes effect in Uganda. The government pressures ISPs to block VPNs.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-05-01&end=2018-08-01&country=ug&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-05-01&end=2018-08-01&country=ug&events=off) [BBC article](https://www.bbc.com/news/world-africa-44315675) [AllAfrica article](http://allafrica.com/stories/201807040129.html) [OONI report](https://ooni.io/post/uganda-social-media-tax/)||
|2018-06-27 20:17:18|||meek|Release of Tor Browser 8.0a9 with non-working meek.|[blog post](https://blog.torproject.org/new-release-tor-browser-80a9) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/26477)||
|2018-06-24|2018-07-06||snowflake|Metrics for Snowflake are missing, for unknown reasons. The gap is nearly contemporaneous with the gap the measurements for all transports/bridges caused by Bifroest–Serge bridge authority switchover, but starts about 2 weeks earlier in Snowflake's case.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/26783)||
|2018-06-20|ongoing|ve||Venezuela's largest ISP, CANTV, blocks direct access to Tor and the IP addresses of default bridges. meek and non-default bridges are reported to work.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/26807) [mailing list post](https://lists.torproject.org/pipermail/tor-project/2018-June/001842.html) [Access Now report](https://www.accessnow.org/venezuela-blocks-tor/)||
|2018-06-11|||ipv4 ipv6|geoip and geoip6 databases updated to "June 7 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 93112125248AD2C11A2531B934FD4AC03999738D`, `geoip6-db-digest BFD2B453F2D9DC875B7B0C464A185E6C3202534F`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=ae540569ce25041db6e78119b2879a127906fbd5)||
|2018-06-10|2018-07-11|tr|relay|Jump of relay users in Turkey, from 5k to about 30k. The timing of the beginning corresponds to the release of Tor Browser 7.5.5 and 8.0a8.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-05-01&end=2018-09-15&country=tr) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-05-01&end=2018-09-15&country=tr) [comment](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/21014#note_2601361)|X|
|2018-06-10 10:15:04|||meek|Release of Tor Browser 8.0a8, removes meek-amazon option.|[blog post](https://blog.torproject.org/tor-browser-80a8-released)||
|2018-06-09 17:17:09|||meek|Release of Tor Browser 7.5.5, removes meek-amazon option.|[blog post](https://blog.torproject.org/tor-browser-755-released)||
|2018-05-23|2018-07-01||bridge|Sharp increase in bridge users in many unrelated countries, affecting even the global aggregate. Relay users unaffected. The graphs reach a peak around 2018-06-07 and then begin falling again. An incomplete sampling of affected countries: [Bangladesh](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-31&country=bd) [Chile](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-31&country=cl) [Indonesia](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-31&country=id) [Morocco](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-31&country=ma) [Venezuela](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-31&country=ve).|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-04-01&end=2018-08-31&country=all&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-31&country=all)|X|
|2018-05-22|2018-06-08|iq|obfs4|Increase in obfs4 users in Iraq, followed by a slow decrease. No matching change in relay users or other transports.|[bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-01&country=iq)|X|
|2018-05-17|||bridge|Release of tor 0.3.4.1-alpha. Has a bug that makes idle bridges unuseful.|[ticket](https://bugs.torproject.org/tpo/core/tor/28717) [ticket](https://bugs.torproject.org/tpo/core/tor/28912)||
|2018-05-15|||ipv4 ipv6|geoip and geoip6 databases updated to "May 1 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 765D2F123DDA7DAEA9C9263975E2B4BAFBD2B908`, `geoip6-db-digest 2AA568CC898BF9924FBACEA26946AA7ED10E7D87`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=033e4723f3651062779ff64a619ec526950857f5)||
|2018-05-14|||meek|Disabled the d2cly7j4zqgua7.cloudfront.net CDN endpoint for meek-amazon.|[Tor Browser ticket](https://bugs.torproject.org/tpo/applications/tor-browser/26098) [Orbot ticket](https://bugs.torproject.org/legacy/trac/26111)||
|2018-05-09 20:46:16|||snowflake|Release of Tor Browser 8.0a7, which changes the default Snowflake rendezvous to use an Azure domain front, instead of the Google one that had been non-functional since 2018-04-13.|[blog post](https://blog.torproject.org/tor-browser-80a7-released) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/26010)||
|2018-05-08 22:01:06|||meek|The [meek-amazon bridge](https://metrics.torproject.org/rs.html#details/F4AD82B2032EDEF6C02C5A529C42CFAFE516564D) imposes a rate limit of 1 MB/s.|||
|2018-05-08||ru||Russia unblocks about 3.7 million IP addresses belonging to Google and Digital Ocean.|[Roskomnadzor press release](https://rkn.gov.ru/news/rsoc/news57454.htm) [monitoring page](https://usher2.club/en/)||
|2018-04-30|ongoing|ir||Iranian ISPs block Telegram.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/26087) [article](https://arstechnica.com/tech-policy/2018/05/iran-blocks-telegram-pushes-replacement-with-death-to-america-emoji/) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-03-01&end=2018-06-01&country=ir&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-03-11&end=2018-06-01&country=ir) [Psiphon users](https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1922)||
|2018-04-28||ru||Russia unblocks about 3 million IP addresses belonging to Amazon and OVH.|[Roskomnadzor press release](https://rkn.gov.ru/news/rsoc/news57288.htm) [monitoring page](https://usher2.club/en/)||
|2018-04-25|2018-07-02||onion|The number of v2 onion services increases from 70k to 120k.|[ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/26081)|X|
|2018-04-16|2018-05-08|ru||Russia tries to block Telegram; blocks about 18 million IP addresses including some belonging to Amazon and Google cloud services.|[article](https://www.bleepingcomputer.com/news/government/russia-bans-18-million-amazon-and-google-ips-in-attempt-to-block-telegram/) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-03-01&end=2018-07-15&country=ru) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-03-01&end=2018-07-15&country=ru)||
|2018-04-16|||snowflake|Moved the Snowflake broker from App Engine to a standalone server.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/22874#note_2591708)||
|2018-04-13 16:00:00|||snowflake|Snowflake client registrations (based on domain fronting) stop working, because of a Google infrastructure change that stops domain fronting from working. The time of the change is between 2018-04-13 14:00:00 and 2018-04-13 18:00:00, based on when the bandwidth graph of the Snowflake bridge [5481936581E23D2D178105D44DB6915AB06BFB7F](https://metrics.torproject.org/rs.html#details/5481936581E23D2D178105D44DB6915AB06BFB7F) went to zero.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25804)||
|2018-04-05|||ipv4 ipv6|geoip and geoip6 databases updated to "April 3 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 8A53650327E8D30E971DC90F564BA9BD1A513F19`, `geoip6-db-digest 698852511F6BC27DFFC115805044C71FDCCF70AF`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=1fa396b0a49448103ad16cb411163e6f5d741cc0)||
|2018-04-02 04:57:42|2018-04-18||snowflake|Accidentally misconfigured the 3 proxy-go instances that were meant to point to the new standalone broker so that they pointed to the old App Engine broker.|[start](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25688#note_2592202) [end](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/22874#note_2591709)||
|2018-04-02 04:57:42|||snowflake|Reinstated periodic restarts of the fallback snowflake proxies.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25688#note_2592202)||
|2018-03-28|ongoing|td||Chad blocks social messaging apps.|[article](https://qz.com/1247234/chad-has-blocked-social-messaging-apps-bbc-amid-political-and-economic-anxiety/) [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-02-01&end=2018-05-15&country=td&events=off)||
|2018-03-27 19:26:12|||snowflake|Restarted the fallback snowflake proxies with no limit on memory.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25688#note_2592202)||
|2018-03-26 20:43:42|||snowflake|Release of Tor Browser 8.0a5. Improves snowflake client performance.|[blog post](https://blog.torproject.org/tor-browser-80a5-released) [ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/21312)||
|2018-03-23 01:02:18|||snowflake|Restarted the fallback snowflake proxies with a limit on resident memory (`ulimit -m`) rather than virtual memory (`ulimit -v`).|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/21312#note_2591536) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25688#note_2592202)||
|2018-03-22 05:16:59|||snowflake|Provisionally increased memory limits of the fallback snowflake proxies to 400 MB, 800 MB, or unlimited.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25688#note_2592202)||
|2018-03-22 03:19:19|||snowflake|Increased memory limit of the fallback snowflake proxies from 200 MB to 400 MB.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/21312#note_2591535) [comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25688#note_2592202)||
|2018-03-22 03:03:45|||snowflake|Disabled periodic restarts of the fallback snowflake proxies; gave them a memory limit of 200 MB.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/21312#note_2591535)||
|2018-03-16 04:07:45|||snowflake|Deployed another attempt to fix frequent crashes of the fallback snowflake proxies.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/21312#note_2591529)||
|2018-03-14 16:53:00|||snowflake|Deployed an attempt to fix frequent crashes of the fallback snowflake proxies.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/21312#note_2591510) [commit](https://gitweb.torproject.org/pluggable-transports/snowflake.git/commit/?id=f2abf5b60c289103d8661b8e54b3d3aee43a4aaf)||
|2018-03-12|||ipv4 ipv6|geoip and geoip6 databases updated to "March 8 2018 Maxmind GeoLite2 Country" (`geoip-db-digest 0FD75C42A32E82100361BD367CB13862806E6A13`, `geoip6-db-digest 5AFA101C4A6AD4289CEE4575943D6BA851606245`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=3418a3a7f0199c0573213dfa586315ff2329f667)||
|2018-03-07|2018-03-15|lk||Sri Lanka blocks Facebook, Instagram, WhatsApp, and Viber.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2018-01-01&end=2018-04-01&country=lk) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2018-01-01&end=2018-04-01&country=lk) [article](https://www.reuters.com/article/us-sri-lanka-clashes-socialmedia/sri-lanka-lifts-ban-on-facebook-imposed-after-spasm-of-communal-violence-idUSKCN1GR31R)||
|2018-03-05|2018-03-08|de|<OR> relay|Steady drop in the number of relay users in Germany, from 1.5M to 650k. (Drop coincides with the release of tor 0.3.2.10, 0.3.1.10, and 0.2.9.15, which offer better resistance against DoS attacks; as well as improvements in speed for downloads from onions [graph](https://metrics.torproject.org/torperf.html?start=2017-12-10&end=2018-03-10&source=all&server=onion&filesize=5mb); see this [graph](https://metrics.torproject.org/connbidirect.html) as well. More datapoints: DDoS of the network happened [around the time](https://lists.torproject.org/pipermail/tor-project/2017-December/001604.html) that saw an increase in the number of relay users in Germany, see entry above or [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-12-11&end=2017-12-22&country=de&events=off))|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-11-10&end=2018-03-10&country=de&events=off) [ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/24669)|X|
|2018-03-03 16:35:22||||Release of tor 0.3.2.10, 0.3.1.10, and 0.2.9.15, which offer better resistance against DoS attacks.|[blog post](https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915) [ticket](https://bugs.torproject.org/tpo/core/tor/24902)||
|2018-02-27 16:00:00|2018-03-02|||Less than 3 bandwidth authorities are available.|[tor-relays](https://lists.torproject.org/pipermail/tor-relays/2018-February/014676.html)||
|2018-02-24||cn||Blocking in China intensifies following the announcement of proposed changes to remove presidential term limits.|[article](https://chinadigitaltimes.net/2018/02/sensitive-words-emperor-xi-jinping-ascend-throne/)||
|2018-02-12|||relay|Tor 0.3.3.2-alpha reaches deb.torproject.org repositories|||
|2018-02-11|||relay|Tor 0.3.3.2-alpha reaches FreeBSD repositories|||
|2018-02-10|||relay|Tor 0.3.3.2-alpha is released (containing important denial-of-service migitations for relays)|[blog](https://blog.torproject.org/tor-0332-alpha-released-bugfixes-and-dos-prevention)||
|2018-02-08|||ipv4 ipv6|geoip and geoip6 databases updated to "February 7 2018 Maxmind GeoLite2 Country" (`geoip-db-digest FF83AD73DE7672C77EDF8888F4B241642C7C90F7`, `geoip6-db-digest B1CDBFEB7C88F82EF3B5289CAFEED1321FA4693F`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=f1278b7e573f01edb8bc3ab4d7fbfbd65b5d2c60)||
|2018-02-01|2018-02-05|ir|meek|Drop of meek users in Iran; other transports not affected.|[graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2018-01-14&end=2018-03-15&country=ir)|X|
|2018-01-24|ongoing||webstats|Tor Browser update pings roughly halve, again. The beginning corresponds with the release of Tor Browser 7.5; however unlike with Tor Browser 6.5.2, there was no change to `app.update.url` this time.|[ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/22346) [thread](https://lists.torproject.org/pipermail/metrics-team/2018-March/000750.html)||
|2018-01-23 20:28:40|||obfs4|Tor Browser 7.5 is released. It adds the default obfs4 bridge noisetor01:46089.|[blog post](https://blog.torproject.org/tor-browser-75-released)||
|2018-01-20|||relay|Some more directory authorities upgrade to 0.3.2.9 which enforces new requirements for the exit flag. ~50 relays lose the exit flag|[tor-relays post](https://lists.torproject.org/pipermail/tor-relays/2018-February/014478.html)||
|2018-01-18|2018-02-24||snowflake|Outage of Snowflake broker caused by the disabling of the Let's Encrypt TLS-SNI-01 challenge.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/25345) [graph](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/30693#note_2593507)||
|2018-01-16 19:15:00||||Tor 0.3.2.9 reaches deb.torproject.org.|[relay versions graph](https://metrics.torproject.org/versions.html?start=2017-12-01&end=2018-03-01)||
|2018-01-08|||ipv4 ipv6|geoip and geoip6 databases updated to "January 5 2018 Maxmind GeoLite2 Country" (`geoip-db-digest ACE2AF82816B9D3F58FC9C79A41B4506D6DAD713`, `geoip6-db-digest 387B3F555F1E054F0F9971C726F49848C5B5CF8B`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=8efbeb09826030302481619dab83e83f35fdc26e)||
|2018-01-05|ongoing|||Outage of the op-hk OnionPerf instance.|[op-hk graph](https://metrics.torproject.org/torperf.html?start=2017-12-01&end=2017-02-01&source=op-hk&server=public&filesize=50kb)||
|2018-01-01||ae|relay|User report that the UAE blocked Tor, bridges work.|[comment](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/25137#note_2601458)||
|2017-12-28|2018-01-13|ir||Protests in Iran, blocking of various services including Tor. Instagram was unblocked 2018-01-06. Telegram was unblocked 2018-01-13.|[Wikipedia](https://en.wikipedia.org/wiki/2017%E2%80%932018_Iranian_protests#Media_coverage_and_censorship) [OONI report](https://ooni.torproject.org/post/2018-iran-protests/) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-11-01&end=2018-01-20&country=ir) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2017-11-01&end=2018-01-20&country=ir) [tweet](https://twitter.com/nusenu_/status/948914485045145601) [Psiphon users](https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1770)||
|2017-12-21||||Release of tor 0.3.2.8-rc, intended to fix the KIST bug that enabled a DoS on relays by running them out of memory.|[announcement](https://lists.torproject.org/pipermail/tor-talk/2017-December/043844.html) [ticket](https://bugs.torproject.org/tpo/core/tor/24665)||
|2017-12-20|||ipv4 ipv6|geoip and geoip6 databases updated to "December 6 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 1D486694A710145631B295CC39ECC5682F75858C`, `geoip6-db-digest F33231CAC761A71F7C19273DB1E11CEE01E2D982`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=428f8a375b8846edd1a056ce66f00fe08117a4ba)||
|2017-12-16|2017-12-17||bridge|Drop in the number of measured bridges.|[graph](https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2018-01-01) [mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html)|X|
|2017-12-12 20:15:53|2018-01-18 02:28:54||meek|Outage of the [meek.bamsoftware.com](https://metrics.torproject.org/rs.html#details/C20658946DD706A7A2181159A1A04CD838570D04) (unthrottled for public use), [meek.bamsoftware.com:7443](https://metrics.torproject.org/rs.html#details/AA033EEB61601B2B7312D89B62AAA23DC3ED8A34) (former meek-azure, now unused), and [gaeuploader.meek.bamsoftware.com](https://metrics.torproject.org/rs.html#details/D36B0328969EC57AB3085A4470882D99A09C0492) (used by [GAEuploader](https://github.com/katherinelitor/GAEuploader)) bridges.|||
|2017-12-12|2018-01-10|fr|<OR> relay|Temporary tripling of relay users in France. Bridges not affected.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-10-01&end=2018-03-01&country=fr&events=off)|X|
|2017-12-10|2018-02-01|de|<OR> relay|Further, slow increase of relay users in Germany, from 500k to over 1.5M.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-11-01&end=2018-01-15&country=de&events=off) [Reddit thread](https://www.reddit.com/r/TOR/comments/7ldrox/tor_usage_in_germany_what_happend/) [ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/24669)|X|
|2017-12-09|||<OR> ipv6 relay|Release of Tor Browser 7.0.11, containing tor 0.3.1.9, which adds an IPv6 address for the bridge authority bastet.|[blog post](https://blog.torproject.org/tor-browser-7011-released)||
|2017-12-09|||<OR> ipv6 relay|Release of Tor Browser 7.5a9, containing tor 0.3.2.6-alpha, which adds an IPv6 address for the bridge authority bastet.|[blog post](https://blog.torproject.org/tor-browser-75a9-released)||
|2017-12-08|2017-12-11||bridge|The bridge authority was down for unknown reasons.|[graph](https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2018-01-01) [mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html)||
|2017-12-05 09:44:00|2017-12-15 15:17:00|zw||Internet outage in Zimbabwe.|[article](https://www.techzim.co.zw/2017/12/zimbabwe-internet-outage-here-what-happened/)||
|2017-12-04|ongoing|||DDoS attack creates load on the network.|[tor-relays thread](https://lists.torproject.org/pipermail/tor-relays/2017-December/013669.html) [relay graph](https://metrics.torproject.org/relayflags.html?start=2017-11-01&end=2018-01-31&flag=Running&flag=Exit&flag=Fast&flag=Guard&flag=Stable&flag=HSDir) [summary post](https://lists.torproject.org/pipermail/tor-project/2017-December/001604.html) [ticket](https://bugs.torproject.org/tpo/core/tor/24902)||
|2017-12-01|||<OR> ipv6 relay|Release of tor 0.2.8.17, 0.2.9.14, 0.3.0.13, 0.3.1.9, and 0.3.2.6-alpha, which add an IPv6 address for the bridge authority bastet.|[ticket](https://bugs.torproject.org/tpo/core/tor/24394) [blog post](https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516)||
|2017-11-25|2017-11-27|pk||Social media block in Pakistan.|[article](https://dailytimes.com.pk/147132/social-media-goes-down-in-pakistan/) [NetBlocks data](https://digitalrightsfoundation.pk/press-release-drf-and-netblocks-find-blanket-and-nation-wide-ban-on-social-media-in-pakistan-and-demand-it-to-be-lifted-immediately/) [OONI/Bytes For All report](https://ooni.torproject.org/post/how-pakistan-blocked-social-media/)||
|2017-11-15|||<OR> relay|Release of Tor Browser 7.5a8, containing tor 0.3.2.4-alpha, which adds a new directory authority bastet, and changes the IP address of the directory authority Longclaw.|[blog post](https://blog.torproject.org/tor-browser-75a8-released)||
|2017-11-15 01:41:36|2017-11-15 05:44:28||meek|Outage of meek-amazon bridge.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/24284)||
|2017-11-14|||<OR> relay|Release of Tor Browser 7.0.10, containing tor 0.3.1.8, which adds a new directory authority bastet, and changes the IP address of the directory authority Longclaw.|[blog post](https://blog.torproject.org/tor-browser-7010-released)||
|2017-11-11|2017-11-12|||Outage of the op-hk OnionPerf instance.|[op-hk graph](https://metrics.torproject.org/torperf.html?start=2017-10-01&end=2017-12-01&source=op-hk&server=public&filesize=50kb)||
|2017-11-10|||ipv4 ipv6|geoip and geoip6 databases updated to "November 6 2017 Maxmind GeoLite2 Country" (`geoip-db-digest E3C910F3B2A6C916C7BE33A943091EF57048B72C`, `geoip6-db-digest E8BD5B2E6554C27F718F1222667C09680D75F799`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=6f8c32b7deb9f0cec6d1553aba71969c9fb6064f)||
|2017-11-01 18:10:00|||meek|Turned off the old meek-amazon CDN endpoint d2zfqthxsdq309.cloudfront.net.|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-November/001555.html)||
|2017-11-01||ru||Ban on VPNs and anonymizers takes effect in Russia.|[news article](https://www.reuters.com/article/us-russia-internet/putin-bans-vpns-to-stop-russians-accessing-prohibited-websites-idUSKBN1AF0QI) [law](http://publication.pravo.gov.ru/Document/View/0001201707300002)||
|2017-10-30|2017-11-06|zm|<OR> relay|Short-lived tripling of relay users in Zambia.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-01&end=2017-12-15&country=zm&events=off)|X|
|2017-10-25|||<OR> relay|Release of tor 0.2.5.15, 0.2.8.16, 0.2.9.13, 0.3.0.12, and 0.3.1.8, which add a new directory authority bastet, and change the IP address of the directory authority Longclaw.|[blog post](https://blog.torproject.org/new-stable-tor-releases-0318-03012-02913-02816-02515) [Bastet blog post](https://blog.torproject.org/introducing-bastet-our-new-directory-authority) [bastet ticket](https://bugs.torproject.org/tpo/core/tor/23910) [Longclaw ticket](https://bugs.torproject.org/tpo/core/tor/23592)||
|2017-10-18|2017-10-24|cn||19th National Congress of the Communist Party of China.|[wikipedia](https://en.wikipedia.org/wiki/19th_National_Congress_of_the_Communist_Party_of_China) [Psiphon users](https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=2067)||
|2017-10-14 19:30:00|||snowflake|Activated client IP address statistics on the Snowflake server and standalone proxies.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/18628#note_2591170)||
|2017-10-07|2017-12-20|ro|<OR> relay|Surge of relay users in Romania, from 10k to around 90k, which later subsided.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-09&end=2018-01-15&country=ro&events=off) [metrics-team thread](https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html)|X|
|2017-10-05 13:00:00|2017-10-05 15:00:00|cn||Guo Wengui speaks at the National Press Club, 09:00–11:00 eastern time. Reports of disruption of VPNs, Tor, Psiphon, Lantern, Shadowsocks in China.|[article on conference](https://www.msn.com/en-sg/money/markets/exiled-chinese-billionaire-blasts-kleptocracy-running-china-warns-of-spy-infiltration-in-us/ar-AAsXLvL) [tweet](https://twitter.com/szshu/status/916289656169275392) [tweet](https://twitter.com/paulwang_xz/status/916633633548525568) [tweet](https://twitter.com/iuui/status/916583990085033985)||
|2017-10-05|||ipv4 ipv6|geoip and geoip6 databases updated to "October 4 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 3A59213E5CFEE380F544B72DC1105366C6BD1CDE`, `geoip6-db-digest 1B8C975E5C62CF0FB5B4E598AE27B7189952BB09`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b9d9b16b7685c79e6440e5f8a1d4bd01a8cefb2c)||
|2017-10-04|||fte|Permanent hardware failure of default FTE bridge 128.105.214.161:8080.|[comment](https://bugs.torproject.org/legacy/trac/28521#note_2305475)||
|2017-10-01|2018-03-01|cm||Internet shutdown in parts of Cameroon.|[article](https://internetwithoutborders.org/new-internet-shutdown-ordered-in-cameroon/) [article](https://www.accessnow.org/shutdown-ended-cameroonians-still-feeling-impact/)||
|2017-09-26|2017-10-22|de|<OR> relay|Steady increase of relay users in Germany, from 180k to around 500k. It would increase further starting 2017-12-10.|[de graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-15&end=2017-12-01&country=de&events=off) [Reddit thread](https://www.reddit.com/r/TOR/comments/7b53kq/direct_users_from_germany_go_from_200k_to_500k_in/) [ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/24669)|X|
|2017-09-20||pr||Hurricane Maria hits Puerto Rico.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-01&end=2017-11-09&country=pr&events=off) [wikipedia](https://en.wikipedia.org/wiki/Hurricane_Maria#Puerto_Rico_3)||
|2017-09-15|2017-10-12|||Outage of the op-hk OnionPerf instance. Reported timeouts on the tor network increased, download speed improved.|[mailing list post](https://lists.torproject.org/pipermail/metrics-team/2017-October/000476.html) [torperf graph](https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=all&server=public&filesize=50kb) [torperf-failures graph](https://metrics.torproject.org/torperf-failures.html?start=2017-07-11&end=2017-10-09&source=all&server=public&filesize=50kb) [op-hk graph](https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=op-hk&server=public&filesize=50kb)||
|2017-09-15|2017-09-16||bridge|The bridge authority was down due to an issue with its offline master key.|[graph](https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2018-01-01) [mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html)||
|2017-09-14 20:00:00|2017-09-16 22:12:00||bridge|Outage of the bridge authority [Bifroest](https://metrics.torproject.org/rs.html#details/1D8F3A91C37C5D1C4C19B1AD1D0CFBE8BF72D8E1).|||
|2017-09-07|||ipv4 ipv6|geoip and geoip6 databases updated to "September 6 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 0CE9EA8882EDED265451C36B49AE7BBB06A11C16`, `geoip6-db-digest C4573496EBD1CC335843067107DA49E482568FF6`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=09618ffe38bc6cd91755c6c1aedb86dc099dfdf8)||
|2017-09-06||pr||Hurricane Irma hits Puerto Rico.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-01&end=2017-11-09&country=pr&events=off) [wikipedia](https://en.wikipedia.org/wiki/Hurricane_Irma#Puerto_Rico_2)||
|2017-09-02|2017-09-21||obfs4|About a 35% increase in obfs4 users before returning to normal. Happened in many countries. Other transports do not have it.|[graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2017-07-15&end=2017-11-09&transport=obfs3&transport=obfs4&transport=meek&transport=%3COR%3E)|X|
|2017-09-01|2017-09-20||obfs4|A flood of over 4,000 obfs4 bridges nicknamed "Machiavelli".|[graph of number of bridges](https://metrics.torproject.org/networksize.html?start=2017-08-01&end=2017-09-30) [tor-relays post](https://lists.torproject.org/pipermail/tor-relays/2017-September/012925.html) [metrics-team thread](https://lists.torproject.org/pipermail/metrics-team/2017-September/000450.html) [tweet](https://twitter.com/nusenu_/status/905580044503969792)||
|2017-08-27|2017-08-29|eg tr|<OR> relay|Short-lived, simultaneous spike in direct users in Egypt and Turkey. Bridge users not affected.|[eg graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-09-15&country=eg&events=off) [tr graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-09-15&country=tr&events=off)|X|
|2017-08-23||kr|<OR> relay|Increase of users in South Korea, relay only.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-06-01&end=2017-12-01&country=kr)|X|
|2017-08-15||hk|<OR> relay|Triple increase in direct Tor users in Hong Kong. Bridge users not affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-06-01&end=2017-08-30&country=hk&events=off)|X|
|2017-08-14|2017-08-15||bridge|Outage of the bridge authority [Bifroest](https://metrics.torproject.org/rs.html#details/1D8F3A91C37C5D1C4C19B1AD1D0CFBE8BF72D8E1).|[mailing list post](https://lists.torproject.org/pipermail/metrics-team/2017-August/000441.html) [mailing list post](https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html) [graph](https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2017-08-27)||
|2017-08-14|||ipv6 obfs4|Jump in IPv6 users of the [Lisbeth](https://metrics.torproject.org/rs.html#details/D9C805C955CB124D188C0D44F271E9BE57DE2109) default obfs4 bridge.|[comment](https://bugs.torproject.org/tpo/applications/tor-browser/22429#note_2640361)|X|
|2017-08-10|2017-08-11|||Outage of the op-hk OnionPerf instance. Reported timeouts on the tor network increased, download speed improved.|[torperf graph](https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=all&server=public&filesize=50kb) [torperf-failures graph](https://metrics.torproject.org/torperf-failures.html?start=2017-07-11&end=2017-10-09&source=all&server=public&filesize=50kb) [op-hk graph](https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=op-hk&server=public&filesize=50kb)||
|2017-08-08|||snowflake|Tor Browser 7.5a4 released, including Snowflake for macOS.|[blog post](https://blog.torproject.org/blog/tor-browser-75a4-released) [issue](https://bugs.torproject.org/tpo/applications/tor-browser/22831)||
|2017-08-07|ongoing|cd||The Democratic Republic of the Congo orders a block of social media services.|[article](https://www.amnesty.org/en/latest/news/2017/08/drc-block-on-social-media-images-an-appalling-attack-on-freedom-of-expression/) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-06-01&end=2017-10-01&country=cd) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2017-06-01&end=2017-10-01&country=cd)||
|2017-08-06|2017-10-07|sc|<OR> relay|Further increase of relay users in the Seychelles, from 5k to 100k. Stopped at the same time as increases in the Netherlands, Romania, and Lithuania.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-10-15&country=sc&events=off) [post suggesting link to 2× dirauth bandwidth](https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html) [post about start](https://lists.torproject.org/pipermail/metrics-team/2017-August/000428.html) [post about end](https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html)|X|
|2017-08-03|||ipv4 ipv6|geoip and geoip6 databases updated to "August 3 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 75AABD32582AC554AF252DDC7BBBABE7C6F28B28`, `geoip6-db-digest A52EFFEF8CF6F3CAA8EBD34961361544E959FAE1`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=1280de42a41ccf7ae398cc86529c880455e9c5d1)||
|2017-08-02|2017-10-07|lt|<OR> relay|Increase of relay users in Lithuania, from 2k to 70k. Stopped at the same time as increases in the Netherlands, Romania, and the Seychelles.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-10-15&country=lt&events=off) [post suggesting link to 2× dirauth bandwidth](https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html) [post about start](https://lists.torproject.org/pipermail/metrics-team/2017-August/000428.html) [post about end](https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html)|X|
|2017-07-31|2017-10-07|nl|<OR> relay|Increase of relay users in the Netherlands, from 50k to 100k. Stopped at the same time as increases in Romania, Lithuania, and the Seychelles.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-10-15&country=nl&events=off) [post suggesting link to 2× dirauth bandwidth](https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html) [post about start](https://lists.torproject.org/pipermail/metrics-team/2017-August/000428.html) [post about end](https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html)|X|
|2017-07-31|2017-10-07|ro|<OR> relay|Increase of relay users in Romania, from 10k to 40k. Bridge users not affected.  Stopped at the same time as increases in the Netherlands, Lithuania, and the Seychelles. Another increase began immediately after.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-16&end=2017-10-15&country=ro&events=off) [post suggesting link to 2× dirauth bandwidth](https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html)|X|
|2017-07-31|2017-08-28|||Directory authorities using 2× bandwidth.|[mailing list post for start](https://lists.torproject.org/pipermail/tor-dev/2017-August/012389.html) [mailing list post for end](https://lists.torproject.org/pipermail/tor-dev/2017-September/012445.html) [post suggesting link to nl, ro, lt, sc increases](https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html)|X|
|2017-07-31|2017-08-17|at|<OR> relay|Fluctuations of relay users in Austria. Bridge users not affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-16&end=2017-09-15&country=at&events=off)|X|
|2017-07-29 07:19:00|2017-08-17 03:32:00||meek|Outage of meek-amazon bridge, caused by an expired certificate.|[Relay Search](https://metrics.torproject.org/rs.html#details/F4AD82B2032EDEF6C02C5A529C42CFAFE516564D) [expired certificate](https://crt.sh/?id=130970041) [new certificate](https://crt.sh/?id=192217077)||
|2017-07-15|2017-07-22|sc|<OR> relay|Increase of relay users in the Seychelles, from 400 to 6000. Bridge users not affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-16&end=2017-08-14&country=sc&events=off)|X|
|2017-07-07|||ipv4 ipv6|geoip and geoip6 databases updated to "July 4 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 3D04F191098640F2E03B4D5F7800088D14B7EC30`, `geoip6-db-digest A3649B9E909C59942FB3D8F874AB4BEA36E8BEC1`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b6acfa491e7fdb6e3d71665a55617727816155fd)||
|2017-07-04 18:00:00|2017-07-21 10:00:00||obfs4|Outage of default obfs4 bridge [frosty](https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html)||
|2017-07-04 14:00:00|2017-07-21 10:00:00||obfs4|Outage of default obfs4 bridge [dragon](https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html)||
|2017-07-02||||deb.torproject.org upgrades from tor 0.2.9 to tor 0.3.0|[relay versions graph](https://metrics.torproject.org/versions.html?start=2017-05-01&end=2017-07-15) [tweet](https://twitter.com/nusenu_/status/884128686764687361)||
|2017-07-01||ae|<OR> relay|Sudden drop in relay users.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-01-01&end=2017-09-01&country=ae&events=off)|X|
|2017-06-26 22:00:00|2017-07-02 02:00:00||obfs4|Outage of default obfs4 bridge [dragon](https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html)||
|2017-06-26 18:00:00|2017-07-03 02:00:00||obfs4|Outage of default obfs4 bridge [frosty](https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html)||
|2017-06-20 00:09:50|2017-06-20 00:32:21||meek|Outage of meek-azure bridge.|[start](https://lists.torproject.org/pipermail/tor-project/2017-June/001209.html) [end](https://lists.torproject.org/pipermail/tor-project/2017-June/001209.html)||
|2017-06-19 18:00:00|2017-06-23 10:00:00||obfs4|Outage of default obfs4 bridge [dragon](https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-June/001211.html)||
|2017-06-18 22:00:00|2017-06-23 10:00:00||obfs4|Outage of default obfs4 bridge [frosty](https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-June/001211.html)||
|2017-06-14|2017-07-06|ml||Sudden increase of direct and bridge users in Mali.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-03-01&end=2017-09-01&country=ml&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2017-03-01&end=2017-09-01&country=ml&events=off)|X|
|2017-06-13||ch|obfs4|Increase in obfs4 users in Switzerland, from 200 to 400.|[bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2017-01-01&end=2017-08-14&country=ch) [transport graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2017-01-01&end=2017-08-14&country=ch)|X|
|2017-06-12|||obfs4|Increased the file descriptor limit on default obfs4 bridges ndnop3 and ndnop5 from 4096 to 32768. They had been failing bootstrap attempts from a test location in the U.S. about 40% of the time.|[graph showing failed connections](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20348#note_2601228)||
|2017-06-09|||ipv4 ipv6|geoip and geoip6 databases updated to "June 8 2017 Maxmind GeoLite2 Country" (`geoip-db-digest AFD609025B66305AD9FA8E0B15AF4F2BC82271F1`, `geoip6-db-digest A69FD14ACE46EE695F589ACE0EB7B915285B51B4`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=104e8fa751c1bef051ac47e39da9bbbc6d158800)||
|2017-06-07|2017-12-14|br|meek|Sustained increase of meek users in Brazil, similar to the one that took place between 2016-07-21 and 2017-03-03.|[graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-06-01&end=2018-01-15&country=br)|X|
|2017-06-07|||ipv6 obfs4|Tor Browser 7.0 released. Adds an IPv6 address for default obfs4 bridge Lisbeth. Adds new default obfs4 bridges [frosty](https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4) and [dragon](https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71).|[blog post](https://blog.torproject.org/blog/tor-browser-70-released) [IPv6 ticket](https://bugs.torproject.org/tpo/applications/tor-browser/22429) [frosty and dragon ticket](https://bugs.torproject.org/tpo/applications/tor-browser/22468)||
|2017-05-25|||obfs4|Set `AssumeReachable 1` on the default obfs4 bridges [cymrubridge31](https://metrics.torproject.org/rs.html#details/C8CBDB2464FC9804A69531437BCF2BE31FDD2EE4) and [cymrubridge33](https://metrics.torproject.org/rs.html#details/0BAC39417268B96B9F514E7F63FA6FBA1A788955) in an attempt to make them publish statistics.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2017-May/012283.html)||
|2017-05-23 07:00:00|2017-06-13 19:20:00||obfs4|Default obfs4 bridge LeifEricson rejects connections due to a broken firewall forwarding rule. This didn't affect the bridges "real" obfs4 port, but it did affect the port at that time configured in Tor Browser.|||
|2017-05-16||ua||Ukraine blocks Russian-operated web services. Relay and bridge users increase over 5×. May be partly attributable to the [FreeU Browser](https://freeu.online/) , a browser produced and advertised by Mail.ru that includes a tor client.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/22369) [news article](https://www.rt.com/business/388502-ukraine-bans-vk-yandex/) [Reddit post](https://www.reddit.com/r/TOR/comments/6c9ig1) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-01&end=2017-05-21&country=ua&events=on) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2017-05-01&end=2017-05-21&country=ua) [news article on FreeU](https://tjournal.ru/44669-vkontakte-predlozhila-ukraincam-peredelannii-brauzer-amigo-s-tor-dlya-obhoda-blokirovok)||
|2017-05-10||eg|<OR> relay|Drop in direct users from Egypt.|[tor-talk post](https://lists.torproject.org/pipermail/tor-talk/2017-May/043206.html) [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-03-15&end=2017-06-13&country=eg&events=on)|X|
|2017-05-09|2017-05-12|mo|<OR> relay|Sudden temporary peak of 3k direct users in Macau.|[tor-talk post](https://lists.torproject.org/pipermail/tor-talk/2017-May/043206.html) [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-12&country=mo&events=on)|X|
|2017-05-08|||ipv4 ipv6|geoip and geoip6 databases updated to "May 2 2017 Maxmind GeoLite2 Country" (`geoip-db-digest B2E5105287668771E34A66F90B34982D419727EF`, `geoip6-db-digest 8DA8AC3C8158CBFDF7DB53BBF73338246872371A`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=5207e41ffeb99089adbb56376c0759b97a556801)||
|2017-05-06 16:20:00|||snowflake|Set `AssumeReachable 1` on the Snowflake bridge [2B280B23E1107BB62ABFC40DDCC8824814F80A72](https://metrics.torproject.org/rs.html#details/2B280B23E1107BB62ABFC40DDCC8824814F80A72) in an attempt to make it start publishing statistics.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2017-May/012243.html)||
|2017-04-30|||meek|The meek-amazon bridge upgrades to meek-server 0.27.|||
|2017-04-23||tw|<OR> relay|Relay users triple and begin to fluctuate in Taiwan.|[tor-talk post](https://lists.torproject.org/pipermail/tor-talk/2017-May/043206.html) [graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-24&country=tw&events=on)|X|
|2017-04-20 11:59:50|||meek obfs4 scramblesuit|Tor Browser 7.0a3 is released. It changes the `app.update.url`. It removes the last remaining scramblesuit bridge. It changes the meek-amazon backend. It adds the new default obfs4 bridges cymrubridge31:80 and cymrubridge33:80.|[blog post](https://blog.torproject.org/tor-browser-70a3-released)||
|2017-04-19 19:00:55|||meek obfs4|Tor Browser 6.5.2 is released. It changes the `app.update.url`. It changes the meek-amazon backend. It adds the new default obfs4 bridges cymrubridge31:80 and cymrubridge33:80.|[blog post](https://blog.torproject.org/tor-browser-652-released) [comment about app.update.url](https://bugs.torproject.org/tpo/network-health/metrics/analysis/22346#note_2568742)||
|2017-04-17|2017-04-23|il|<OR> relay|Another sudden increase of direct users in Israel. Bridge users not affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-23&country=il&events=off)|X|
|2017-04-14|2017-08-20||<OR>|Directory authority maatuska's bwscanner stops operating, leading to a drop in traffic on some relays.|[tor-consensus-health post about start](https://lists.torproject.org/pipermail/tor-consensus-health/2017-April/007845.html) [tor-consensus-health post about end](https://lists.torproject.org/pipermail/tor-consensus-health/2017-August/008106.html) [tor-dev thread](https://lists.torproject.org/pipermail/tor-dev/2017-April/012215.html) [analysis](https://lists.torproject.org/pipermail/tor-consensus-health/2017-May/007908.html)||
|2017-04-06|||ipv4 ipv6|geoip and geoip6 databases updated to "April 4 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 0F3D4A456E5078CC9E49398ADCB04C40EA49B793`, `geoip6-db-digest 04F41F05FA167EF6EEE3FE953404AB0BCCD33008`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=9d7933296c187061ce121012cdd7964321e06db2)||
|2017-04-05|2017-04-13|il|<OR> relay|Sudden increase of direct users in Israel. Bridge users not affected.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-23&country=il&events=off)|X|
|2017-03-22|||meek|Orbot 15.4.0 beta-2 multi is released, containing the new meek-azure CDN configuration.|[mailing list post](https://lists.mayfirst.org/pipermail/guardian-dev/2017-March/005220.html) [commit](https://github.com/n8fr8/orbot/commit/6496cb11d61e0e42c48569c9eae303e0cd625e85)||
|2017-03-08|||ipv4 ipv6|geoip and geoip6 databases updated to "March 7 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 63921843E3AAA632088D189D877F836A373CD40D`, `geoip6-db-digest 2B93B9C6679BB09E1746F212A6DCDC6E710F5F52`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=4488c319dde4c986da01a4635edaabeb1bc574a4)||
|2017-03-07 18:32:11|||meek scramblesuit|Tor Browser 6.5.1 is released, containing the new meek-azure CDN configuration, and removing the last remaining scramblesuit bridge.|[blog post](https://blog.torproject.org/blog/tor-browser-651-released) [meek ticket](https://bugs.torproject.org/tpo/applications/tor-browser/21342) [scramblesuit ticket](https://bugs.torproject.org/tpo/applications/tor-browser/21536)||
|2017-03-03 17:36:00|||meek|Stopped the (unused) meek-azure CDN endpoint meek-reflect.azureedge.net.|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-March/000981.html)||
|2017-03-03 17:34:00|||meek|Stopped the meek-azure CDN endpoint az786092.vo.msecnd.net.|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-March/000981.html)||
|2017-03-03 17:32:00|||meek|Stopped the meek-azure CDN endpoint az668014.vo.msecnd.net.|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-March/000981.html)||
|2017-03-01|~2018-11-12|ae|<OR> relay|Another increase in relay users, slower and more sustained than the previous one.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2016-07-01&end=2019-01-01&country=ae&events=off) [ticket about end](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/28898#note_2601587)|X|
|2017-02-12|||ipv4 ipv6|geoip and geoip6 databases updated to "February 8 2017 Maxmind GeoLite2 Country" (`geoip-db-digest C0C6099CE335916862978F77756C0B42521A74B2`, `geoip6-db-digest A54B14B9D47584E010F763D3EAE23C4726F4A8D5`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=f6016058b42aa1c4528fd8c7c2da3d13eddd63dc)||
|~2017-02-10|ongoing||<OR> exit|Measurement error from bandwidth authority causes decrease in measured bandwidth in Europe.|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2017-February/000963.html)||
|2017-02-09|~2017-08-01|in|obfs3|Gradual but large increase of obfs3 users in India, followed by slow decay. Relay users and other transports seemingly not affected.|[graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-11-01&end=2017-07-27&country=in)|X|
|2017-02-09|2017-03-21|jo|obfs3|Abrupt increase and decrease in obfs3 users in Jordan. Relay users and other transports seemingly not affected.|[graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-11-01&end=2017-07-27&country=jo)|X|
|2017-02-06|~2017-08-01|ae|obfs3|Increase in obfs3 users from the UAE, from 5K to 100K. Other transports not affected.|[transport graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2017-01-01&end=2017-08-01&transport=obfs3&transport=obfs4&transport=meek&transport=%3COR%3E) [UAE bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2017-01-01&end=2017-08-01&country=ae) [ticket](https://bugs.torproject.org/tpo/core/tor/21345)|X|
|2017-01-25|2017-04-05||webstats|Tor Browser update pings roughly halve. The beginning corresponds with the release of Tor Browser 6.5.2, which changed the `app.update.url`. The end doesn't correspond to any release.|[ticket](https://bugs.torproject.org/tpo/network-health/metrics/analysis/22346)||
|2017-01-24 22:22:32||||Tor Browser 6.5 is released. It changes the `app.update.url`, which causes an apparent drop in update pings.|[blog post](https://blog.torproject.org/tor-browser-65-released) [graph](https://metrics.torproject.org/webstats-tb.html?start=2017-01-01&end=2017-06-01) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/19481) [comment about app.update.url](https://bugs.torproject.org/tpo/network-health/metrics/analysis/22346#note_2568742)||
|2017-01-24|||snowflake|Tor Browser 7.0a1 released, including Snowflake for GNU/Linux only.|[blog post](https://blog.torproject.org/blog/tor-browser-70a1-released)||
|2017-01-22|||meek|1.0-beta release of GAEuploader, a tool that automates the setting up of meek.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2017-January/011812.html)||
|2017-01-16|2017-04-20|cm||Internet shutdown in parts of Cameroon.|[article](https://cipesa.org/2017/01/13-days-later-cameroon-maintains-internet-shutdown-despite-global-outcry/) [article](https://www.accessnow.org/victory-cameroon-94-days-internet-back/)||
|2017-01-15|2017-03-01|ae|<OR> relay|Huge spike in relay users (400k+). An anonymous contributor suggests that it may be a botnet, based on the large number of hosts with an open SMB port in the UAE.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2017-01-01&end=2017-06-01&country=ae&events=off) [metrics-team thread](https://lists.torproject.org/pipermail/metrics-team/2017-January/000284.html) [Reddit thread](https://www.reddit.com/r/TOR/comments/5pbukk/united_arab_emirates_went_from_10k_tor_users_to/) [comment about botnet](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/25137#note_2601451)|X|
|2017-01-09|||meek|Decreased the rate limit on the meek-azure bridge to 2.0 MB/s, from 3.0 MB/s.|||
|2017-01-04|||ipv4 ipv6|geoip and geoip6 databases updated to "January 4 2017 Maxmind GeoLite2 Country" (`geoip-db-digest 672C29A4FA9BF81DE97CFE128741445E2BDE8097`, `geoip6-db-digest 81F380639A8E1000539204949A363FD3BFAFBA74`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=3833f67dd2dc35dbcfe1d5659c885f0b5f54125b)||
|2016-12-21|2016-12-28||<OR> relay|Drop in relay users.|[metrics-team thread](https://lists.torproject.org/pipermail/metrics-team/2016-December/000260.html) [thread continues](https://lists.torproject.org/pipermail/metrics-team/2017-January/000264.html)|X|
|2016-12-15|ongoing|cd||The Democratic Republic of the Congo orders a block of social media services.|[article](http://wlrn.org/post/congo-block-social-media-sites-ahead-protests-against-president) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2016-10-01&end=2016-12-20&country=cd) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2016-10-01&end=2016-12-20&country=cd)||
|2016-12-13 19:08:09|||obfs4|Tor Browser 6.5a6 is released. It fixes the `app.update.url`. It adds (uncomments) the default obfs4 bridge NX01:443. It activates timing obfuscation for certain obfs4 bridges. It changes the port of other obfs4 bridges.|[blog post](https://blog.torproject.org/tor-browser-65a6-released)||
|2016-12-12||tr|<OR>|Turkey blocks direct Tor connections. The order to block had come on 2016-11-04.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/21014) [tweet](https://twitter.com/josswright/status/809379534420185089) [article](https://turkeyblocks.org/2016/12/18/tor-blocked-in-turkey-vpn-ban/)||
|2016-12-09|||ipv4 ipv6|geoip and geoip6 databases updated to "December 7 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 1317BB3525E85E01FB34A89E04CE549AC23D07BD`, `geoip6-db-digest 865048C69BEC02B37268BFBAD66D9729B21CFCF5`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=9db47e792160766de49b76bff71afdc4f743df88)||
|2016-12-01||by|<OR> relay|Belarus blocks the addresses of public Tor relays, apparently by RST injection. Bridges work, even unobfuscated ones.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20907) [article (Russian)](https://geektimes.ru/post/283392/) [OONI blog post](https://ooni.torproject.org/post/belarus-fries-onion/)||
|2016-11-30 20:00:00|2016-12-02 12:00:00|gm||Internet shutdown in Gambia.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2016-11-14&end=2016-12-14&country=gm) [OONI report](https://ooni.torproject.org/post/gambia-internet-shutdown/) [Cloudflare blog post](https://blog.cloudflare.com/will-autocrats-ever-learn-the-internet-blackout-in-gambia/)||
|2016-11-22|||meek|Decreased the rate limit on the meek-amazon bridge to 2.0 MB/s, from 3.0 MB/s.|||
|2016-11-20|2016-12-22|sa|bridge|Decrease in direct users and increase in bridge users in Saudi Arabia. The increase in bridge users lasts only about one month while the number of direct users remains down.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20785)|X|
|2016-11-20||sa|<OR>|Decrease in direct users and increase in bridge users in Saudi Arabia.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20785)|X|
|2016-11-18|||obfs4|Default obfs4 bridge [Lisbeth](https://metrics.torproject.org/rs.html#details/D9C805C955CB124D188C0D44F271E9BE57DE2109) turns on timing obfuscation (`iat-mode=1`).|[ticket](https://bugs.torproject.org/tpo/applications/tor-browser/20837)||
|2016-11-16 09:20:45||||Tor Browser 6.5a4 is released. It changes the `app.update.url`.|[blog post](https://blog.torproject.org/tor-browser-65a4-released) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/19481)||
|2016-11-15|||meek|Tor Browser 6.0.6 is released, unbreaking meek on macOS 10.12 (Sierra). (See 2016-09-20 breaking event.)|[blog post](https://blog.torproject.org/blog/tor-browser-606-released) [ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/20250#note_2602402)||
|2016-11-15|||obfs4|Default obfs4 bridges ndnop3 and ndnop5 turn on timing obfuscation (`iat-mode`).|[mailing list post](https://lists.torproject.org/pipermail/tor-project/2016-November/000780.html) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/20837)||
|2016-11-07|||ipv4 ipv6|geoip and geoip6 databases updated to "November 3 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 363C038D0BE61D6E0A63C43DE8EA70771ED7BEA5`, `geoip6-db-digest 6110A2B794AFF0180FD096A4759434CABD289C40`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=ea597832e25e776a45375d18a973e079ca32d424)||
|2016-11-04||tr||Turkey orders a block on VPN services and Tor.|[Turkish article](http://turk-internet.com/portal/yazigoster.php?yaziid=54465) [English article](https://motherboard.vice.com/read/turkey-doubles-down-on-censorship-with-block-on-vpns-tor) [ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/21014)||
|2016-11-03|ongoing|tr||Turkey blocks Facebook, Twitter, YouTube, WhatsApp.|[article](https://turkeyblocks.org/2016/11/04/social-media-shutdown-turkey/)||
|2016-10-30|||meek|Increased the rate limit on the meek-amazon bridge to 3.0 MB/s, from 1.0 MB/s.|||
|2016-10-28|||meek|Decreased the rate limit on the meek-amazon bridge to 1.0 MB/s, from 3.0 MB/s.|||
|2016-10-25|ongoing|eg|<OR> relay|Egypt blocks Tor directory authorities and public relays by TCP RST. Bridges work.|[OONI report](https://ooni.torproject.org/post/egypt-network-interference/#attempts-to-block-tor)||
|2016-10-19|2016-11-10||meek|Large decrease in meek users, perhaps caused by problems in Orbot 15.0.2 BETA 1 that were fixed in Orbot 15.2.0 RC8.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20495) [initial email](https://lists.torproject.org/pipermail/tor-project/2016-October/000764.html) [followup email](https://lists.torproject.org/pipermail/tor-project/2016-November/000778.html) [Orbot mail](https://groups.google.com/d/msg/traffic-obf/CSJLt3t-_OI/FnAqWqquAwAJ)||
|2016-10-09|2016-10-25|il|<OR> relay|Direct users fluctuate wildly in Israel. Bridge users not affected.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2016-07-28&end=2016-10-26&country=il&events=off)|X|
|2016-10-08|2016-10-09|tr||Turkey blocks storage services including Dropbox, Google Drive, OneDrive, and GitHub. Most (all?) of the blocks were rescinded the next day.|[blocking article](https://turkeyblocks.org/2016/10/08/google-drive-dropbox-blocked-in-turkey/) [unblocking tweet](https://twitter.com/TurkeyBlocks/status/785054084856512512) [unblocking article](https://www.turkishminute.com/2016/10/09/turkey-lifts-block-dropbox-google-drive-onedrive-remains-blocked/)||
|2016-10-08||et||Ethiopia declares a state of emergency and implements network blocks.|[OONI report](https://ooni.torproject.org/post/ethiopia-report/#internet-shutdown)||
|2016-10-05|||ipv4 ipv6|geoip and geoip6 databases updated to "October 4 2016 Maxmind GeoLite2 Country" (`geoip-db-digest C14DF5AE94101562DEACDD296278B0EFA3EA26E5`, `geoip6-db-digest A88A828020A558D37F97CF683D4521270F0511A2`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=1b4984f196848cd404456fd1251e0352b9abf05e)||
|2016-10-02|2016-10-03|eg|<OR> relay|Reports that direct connections from Egypt are blocked; bridges are required. Maybe be the same as the block beginning 2016-10-25.|[OONI report](https://ooni.torproject.org/post/egypt-network-interference/#attempts-to-block-tor)||
|2016-09-28|||meek|Rate limit on the meek-amazon bridge returns to 3.0 MB/s, having been set to about 1.0 MB/s for some time, cause uncertain.|||
|2016-09-24|||obfs3|Default obfs3 bridge LeifEricson upgrades and begins reporting statistics to the new bridge authority Bifroest. This is the last obfs3 bridge that hadn't upgraded.|||
|2016-09-24|||obfs4|Default obfs4 bridge LeifEricson upgrades and begins reporting statistics to the new bridge authority Bifroest. This is the last obfs4 bridge that hadn't upgraded.|||
|~2016-09-23|2016-11-28||obfs3|Outage of default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint [AF9F66B7B04F8FF6F32D455F05135250A16543C9](https://metrics.torproject.org/rs.html#details/AF9F66B7B04F8FF6F32D455F05135250A16543C9)). (Start date not known for sure, though it must have been after 2016-09-23; discussed in non-archived tor-team email.)|||
|2016-09-23|||obfs3|Default obfs3 bridges ndnop0 and ndnop2 upgrade and begin reporting statistics to the new bridge authority Bifroest.|[post on bridges not reporting statistics](https://lists.torproject.org/pipermail/metrics-team/2016-September/000217.html)||
|2016-09-23|||obfs3|Default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint [AF9F66B7B04F8FF6F32D455F05135250A16543C9](https://metrics.torproject.org/rs.html#details/AF9F66B7B04F8FF6F32D455F05135250A16543C9)) upgrade and begin reporting statistics to the new bridge authority Bifroest.|||
|2016-09-23|||obfs4|Default obfs3 bridges ndnop3 and ndnop5 upgrade and begin reporting statistics to the new bridge authority Bifroest.|[post on bridges not reporting statistics](https://lists.torproject.org/pipermail/metrics-team/2016-September/000217.html)||
|2016-09-20|||meek|macOS 10.12 (Sierra) is released, breaking some programs that are built with Go <1.7, including the meek-client that comes with Tor Browser. (See 2016-11-15 unbreaking event.)|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/20250)||
|2016-09-07|||ipv4 ipv6|geoip and geoip6 databases updated to "September 6 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 72F8AD2CD7C97D173AD53276366EAD32B13E0A50`, `geoip6-db-digest B6427DEAD2291FBF8311A2233AF4960BF4009713`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=56f95ba94dfeaacee63047b1613129de3d01be87)||
|2016-09-04||ir|<OR>|Iran intensifies the blocking begun on 2016-08-20, getting most of the remaining direct users. There is interference in the graphs from the bridge authority changeover on 2016-09-02, but because the changeover would not have affected counts of ''direct'' users, it may be a coincidence.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20216)||
|2016-09-02|||bridge|The former bridge authority Tonga shuts down. Bridges that have not updated to tor 0.2.8.7 or 0.2.9.2-alpha (which include all 5 default obfs3 bridges and 3/16 default obfs4 bridges) stop reporting statistics.|[shutdown notice](https://bugs.torproject.org/tpo/core/dirauth/19690#note_2512024) [blog post](https://blog.torproject.org/blog/new-bridge-authority) [loss of reporting bridges](https://metrics.torproject.org/networksize.html?start=2016-07-01&end=2016-09-23)||
|2016-08-31|||bridge|CollecTor begins publishing bridge stats from the new bridge authority Bifroest.|[post](https://lists.torproject.org/pipermail/tor-dev/2016-August/011336.html)||
|2016-08-24|||bridge|tor 0.2.8.7 and 0.2.9.2-alpha are released, changing the bridge authority from Tonga to Bifroest.|[0.2.8.7 announcement](https://blog.torproject.org/blog/tor-0287-released-important-fixes)||
|2016-08-24||cn|<OR>|Large decrease in users in China.|[relay](https://metrics.torproject.org/userstats-relay-country.html?start=2016-07-30&end=2016-10-28&country=cn&events=off) [bridge](https://metrics.torproject.org/userstats-bridge-country.html?start=2016-07-30&end=2016-10-28&country=cn)|X|
|2016-08-20||ir|<OR>|Iran somehow blocks most direct Tor connections. May also affect bridge users, but it's hard to tell because there were few vanilla bridge users anyway.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20216)||
|2016-08-18|2016-08-29|ml||Sudden increase of direct and bridge users in Mali.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2016-03-01&end=2016-10-01&country=ml&events=off) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2016-03-01&end=2016-10-01&country=ml&events=off)|X|
|2016-08-18|||meek|Changed the meek-amazon CDN price class from "All" to "Use Only US, Canada and Europe."|||
|2016-08-12|||ipv4 ipv6|geoip and geoip6 databases updated to "August 2 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 9DD185BEC4F482DDD20A0221B3DD3F40175F0123`, `geoip6-db-digest B1C1B6BDC9627E3D87530A2C70578AC69C20C5C6`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=1410947351a0e498c2a4c568db3a55b44fd9aa6e)||
|2016-07-21|2017-03-03|br|meek|Sustained increase in meek users in Brazil. Locals believe that they are not actual users, rather bots or something like that. End date coincides with shutdown of meek-azure before migration. Would pick up again 2017-06-07.|[graph](https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-06-01&end=2017-04-01&country=br)|X|
|2016-07-18|||ipv4 ipv6|geoip and geoip6 databases updated to "July 6 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 19FC902B6A860BA7E4BADCB5404482995F7E0763`, `geoip6-db-digest 7E717154718F2065240B90F8132F305AF78C9A9D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=79939c6f11edbd5bec21594b1f4337d8cfa2a843)||
|2016-07-15||tr|<OR>|Coup attempt in Turkey. A paper (§ 4.1) reports a decline in Tor users.|[paper](https://www.usenix.org/conference/foci17/workshop-program/presentation/tanash) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2016-04-01&end=2016-09-01&country=tr)||
|2016-07-07|2016-07-07|zw||Four-hour block of WhatsApp in Zimbabwe.|[article](https://cipesa.org/2016/07/zimbabwe-becomes-the-latest-country-to-shut-down-social-media/)||
|2016-06-12|||ipv4 ipv6|geoip and geoip6 databases updated to "June 7 2016 Maxmind GeoLite2 Country" (`geoip-db-digest DA31976A9C7D48C2C16EA70BCE9006772A0F4A34`, `geoip6-db-digest FF1DD08CA9EB6528E1A6389E7154BD9586F24370`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=c14c662758e95e85aa251c959c4d03c7598783d8)||
|2016-06-01||kz|<OR> obfs4|Kazakhstan blocks vanilla Tor TLS. Users mostly switch to obfs4.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/20348)||
|2016-05-30|||fte|Tor Browser 6.0 released, which lacks the fte pluggable transport on Mac.|[6.0 blog post](https://blog.torproject.org/blog/tor-browser-60-released) [ticket](https://bugs.torproject.org/legacy/trac/18495)||
|2016-05-13|||meek|meek-google's App Engine instance is suspended and meek-google stops working.|[mailing list post](https://lists.torproject.org/pipermail/tor-talk/2016-June/041057.html)||
|2016-05-11|2016-05-13|ug||Social media blackout in Uganda following presidential inauguration.|[advox article](https://advox.globalvoices.org/2016/05/17/ugandans-are-finally-back-on-social-media-after-days-long-blackout/) [OONI report](https://ooni.torproject.org/post/uganda-social-media-blocked/) [Freedom House report](https://freedomhouse.org/report/freedom-net/2016/uganda#a2-limits)||
|2016-05-09|||ipv4 ipv6|geoip and geoip6 databases updated to "May 4 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 76631C314A048A59A1D801515CC7FD55CE719499`, `geoip6-db-digest C9392F0337A7509F1187890925CF7006F884ECBA`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=3c2d4611ce52024364bc729a97749651ac239e80)||
|2016-05-02|2016-05-03|br|<OR>|WhatsApp block in Brazil|[blog post](https://blog.torproject.org/blog/tracking-impact-whatsapp-blockage-tor) [OONI report](https://ooni.torproject.org/post/brazil-whatsapp-block/) [bloqueios report](http://bloqueios.info/en/casos/block-for-non-compliance-with-judicial-requests-for-user-data-3/)||
|2016-04-28|||fte|Tor Browser 6.0a5 and 6.0a5-hardened released, which lacks the fte pluggable transport on Mac.|[6.0a5 blog post](https://blog.torproject.org/blog/tor-browser-60a5-released) [6.0a5-hardened blog post](https://blog.torproject.org/blog/tor-browser-60a5-hardened-released) [ticket](https://bugs.torproject.org/legacy/trac/18495)||
|2016-04-07|||ipv4 ipv6|geoip and geoip6 databases updated to "April 5 2016 Maxmind GeoLite2 Country" (`geoip-db-digest F9DFB82B6F1A480F07F4B87992CBFB7A48CB8DA2`, `geoip6-db-digest 769B499E6AE9FE0C2366141B931A3DB1B5489114`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=97c6e717b9f3f198163c6d5b4bde86e7f3da28d0)||
|2016-03-27 21:28:00|2016-03-31 17:20:00||meek|Temporarily ran an experimental branch for IPv6 counting on the meek-azure bridge.|[task-18460-2 branch](https://gitweb.torproject.org/karsten/tor.git/log/?h=task-18460-2&id=b79d859)||
|2016-03-27 18:30:00|2016-03-27 20:30:00||meek|Outage of meek-azure bridge, caused by an expired TLS certificate.|||
|2016-03-04|||ipv4 ipv6|geoip and geoip6 databases updated to "March 3 2016 Maxmind GeoLite2 Country" (`geoip-db-digest A34F49E5A871FA4D243C46C04B67BB3CAAFE6F74`, `geoip6-db-digest 9C8C4F7C7612849C88206726FCDA8CB85B8D27F3`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=8e2640b15ab72630e0f391a51f927c042346b503)||
|2016-02-24||tm|<OR>|Large drop in direct users in Turkmenistan.|[graph](https://metrics.torproject.org/userstats-relay-country.html?start=2015-11-01&end=2016-04-01&country=tm&events=off)|X|
|2016-02-17|2016-02-21|ug||Social media blackout in Uganda during presidential election.|[Freedom House report](https://freedomhouse.org/report/freedom-net/2016/uganda#a2-limits)||
|2016-02-04|||ipv4 ipv6|geoip and geoip6 databases updated to "February 2 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 9E16EDBB826B958A7B8B84674EA98B78C13F1177`, `geoip6-db-digest DF9538534517275080F8335DDEE4B879A3314ED4`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d5ac79e056bdb740adecf45ef3b50d1c16cf394f)||
|2016-01-29|2016-02-02|cn|meek|Temporary blocking of an Azure edge server in China.|[mailing list post](https://lists.torproject.org/pipermail/tor-talk/2016-February/040199.html)||
|2016-01-16|||meek|Increased rate limit of the meek-amazon bridge to 3 MB/s, from 1.1 MB/s.|||
|2016-01-15|||meek|Increased rate limit of the meek-google bridge to 3 MB/s, from 1.1 MB/s.|||
|2016-01-14|||meek|Increased rate limit of the meek-azure bridge to 3 MB/s, from 0.8 MB/s.|||
|2016-01-11|||meek|Enabled client IP statistics on the meek-amazon bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/13171#note_2602097)||
|2016-01-07|||ipv4 ipv6|geoip and geoip6 databases updated to "January 5 2016 Maxmind GeoLite2 Country" (`geoip-db-digest 44FC92E4D3F8C9A3A49EE9A594790C52E684298A`, `geoip6-db-digest BB261912C96611967FE5C1AE2700C965DBB8D61C`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=1496056c121d02193433d98173213e52eb3e90a7)||
|2015-12-31|2020-06-04|mx||The Telmex ISP in Mexico blocks seven directory authorities.|[mailing list post](https://lists.torproject.org/pipermail/tor-relays/2016-January/008491.html) [article](https://globalvoices.org/2020/09/08/we-made-the-largest-mexican-telecommunications-operator-stop-blocking-secure-internet/)||
|2015-12-25|||meek|Established an unthrottled bridge [C20658946DD706A7A2181159A1A04CD838570D04](https://metrics.torproject.org/rs.html#details/C20658946DD706A7A2181159A1A04CD838570D04) for people who set up their own meek CDN configuration.|||
|2015-12-20|||meek|Enabled client IP statistics on the meek-google bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/13171#note_2602093)||
|2015-12-14|||meek|Enabled client IP statistics on the meek-azure bridge.|[comment](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/13171#note_2602089)||
|2015-12-05|||ipv4 ipv6|geoip and geoip6 databases updated to "December 1 2015 Maxmind GeoLite2 Country" (`geoip-db-digest 6346E26E2BC96F8511588CE2695E9B0339A75D32`, `geoip6-db-digest 43CCB43DBC653D8CC16396A882C5F116A6004F0C`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=dbb919cf9400738987bbb91166b7b30c4cf770e9)||
|2015-11-18|2015-12-10|bd|<OR> obfs3 obfs4|Bangladesh blocks Facebook, WhatsApp, and Viber.|[news article](http://phys.org/news/2015-12-bangladesh-facebook.html) [(archive)](https://archive.fo/fc2WQ) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2015-08-01&end=2016-02-01&country=bd&events=off)||
|2015-11-04|||meek|Tor Browser 5.0.4 and 5.5a4 released, containing a fixed fingerprint for meek-amazon.|[5.0.4 blog post](https://blog.torproject.org/tor-browser-504-released) [5.5a4 blog post](https://blog.torproject.org/tor-browser-55a4-released) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/17473)||
|2015-10-30|||meek|Altered the performance settings on the meek-google App Engine instance. Set max idle instances to 2 and min pending latency to 1000 ms. This used to be configured through the web interface but is now configured in an application file, which at some point caused the settings from 2015-02-28 to be lost.|||
|2015-10-30|||meek|Further rate-limited the meek-azure bridge to 0.8 MB/s, from 1.1 MB/s.|||
|2015-10-09|||ipv4 ipv6|geoip and geoip6 databases updated to "October 9 2015 Maxmind GeoLite2 Country" (`geoip-db-digest 5BF366AD4A0572D82A1A0F6628AF8EF7725E3AB9`, `geoip6-db-digest 212DE17D5A368DCAFA19B95F168BFFA101145A93`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=62b02a1941c6c51efe36f804ddd10f62a3606d41)||
|2015-10-09|||meek|The fingerprint of the meek-amazon bridge changes, as a result of begin rebooted. Released Tor Browsers with the former fingerprint are unable to connect. The fingerprint changed from 4EE0CC769EB4B15A872F742EDE27D298A59DCADE to 6DDD1DB8526282837C50E9AB5D14AB50150CD624, then again to B9E7141C594AF25699E0079C1F0146F409495296. The new fingerprint shipped with Tor Browser 5.0.4 and 5.5a4 on 2015-11-04.|[ticket](https://bugs.torproject.org/tpo/applications/tor-browser/17473)||
|2015-10-02|||meek|Rate-limited the meek-azure bridge to 1.1 MB/s. (Azure grant expired.)|||
|2015-09-30|2015-10-09||meek|Outage of meek-amazon caused by an expired certificate. As a result of being rebooted, the bridge also changes its fingerprint from 4EE0CC769EB4B15A872F742EDE27D298A59DCADE to 6DDD1DB8526282837C50E9AB5D14AB50150CD624.|[mailing list post about start](https://lists.torproject.org/pipermail/tor-talk/2015-October/039231.html) [mailing list post about end](https://lists.torproject.org/pipermail/tor-talk/2015-October/039234.html) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/17473)||
|2015-09-24|||ipv4 ipv6|geoip and geoip6 databases updated to "September 3 2015 Maxmind GeoLite2 Country" (`geoip-db-digest 022B9BADD23D743E51F165FB4C87E78E59F0BCB8`, `geoip6-db-digest DE13219FCF0F27999D1F91174CF80291B1746C95`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=8b3e0b772991b5611f06596865b6a61dd394237f)||
|2015-09-23|||meek|Upgraded meek-azure bridge from KVM to Xen.|[blog post](https://blog.linode.com/2015/06/16/linode-turns-12-heres-some-kvm/)||
|2015-08-11|||meek|Tor Browser 5.0 and 5.5a1 released. They have an updated configuration to work around the meek-azure outage that started 2015-07-20.|[blog post](https://blog.torproject.org/tor-browser-50-released) [blog post](https://blog.torproject.org/tor-browser-55a1-released) [ticket](https://bugs.torproject.org/tpo/applications/tor-browser/16634)||
|2015-07-29|||ipv4 ipv6|geoip and geoip6 databases updated to "July 8 2015 Maxmind GeoLite2 Country" (`geoip-db-digest 6882B8663F74C23E26E3C2274C24CAB2E82D67A2`, `geoip6-db-digest F063BD5247EB9829E6B9E586393D7036656DAF44`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=7004d67430857f8b279bbfe789eb127c954f69eb)||
|2015-07-22|||meek|Published a workaround for the meek-azure outage that started 2015-07-20.|[mailing list post](https://lists.torproject.org/pipermail/tor-talk/2015-July/038496.html)||
|2015-07-20|2015-08-14||meek|Outage of meek-azure.|[mailing list post about start](https://lists.torproject.org/pipermail/tor-talk/2015-July/038487.html) [mailing list post about end](https://lists.torproject.org/pipermail/tor-talk/2015-August/038780.html)||
|2015-06-11|2015-06-13||bridge|Bridge users temporarily increase, because of one bridge reporting high statistics.|[issue](https://bugs.torproject.org/tpo/network-health/metrics/website/40033)||
|2015-06-09|||ipv4|geoip database updated to "June 3 2015 Maxmind GeoLite2 Country" (`geoip-db-digest D095D62E8A1607C2C3AF61366929BCAD0E6D3184`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=e5907e94c225cabec1f5cf94870c424fc1767c7e)||
|2015-06-09|||ipv6|geoip6 database updated to "June 3 2015 Maxmind GeoLite2 Country" (`geoip6-db-digest AC1BE3D0707D16AB04092FE00C9732658C926CD8`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=08e14e1448fdf8e82e0336c6f7bfb729572d6b29)||
|2015-06-08|||meek|Rate-limited the meek-amazon bridge to 1.1 MB/s.|||
|2015-06-02|||meek|Further rate-limited meek-google to 1.1 MB/s, from 1.5 MB/s.|||
|2015-05-22|||meek|Rate-limited the meek-google bridge to 1.5 MB/s.|||
|2015-04-27|||obfs4|Release of Tor Browser 4.5, the first stable release with obfs4.|[blog post](https://blog.torproject.org/tor-browser-45-released)||
|2015-04-24|||ipv4|geoip database updated to "April 8 2015 Maxmind GeoLite2 Country" (`geoip-db-digest 0A1F9C09E08F6F2490E8880664D4E863D1680A12`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=bcc0a48cfe6cfd3a96580fc345553fa3fb37c5b1)||
|2015-04-24|||ipv6|geoip6 database updated to "April 8 2015 Maxmind GeoLite2 Country" (`geoip6-db-digest A6E9B5DE6F887315749B29F9C9F698215BE5240A`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b5f64958764aae7f2ccb7c873fa61b47a2a7e9ba)||
|2015-04-19|||meek obfs4|Release of Orbot v15 alpha 5, first release with obfs4.|[mailing list post](https://lists.mayfirst.org/pipermail/guardian-dev/2015-March/004283.html)||
|2015-04-15|||meek|Tor Weekly News covers the meek-azure performance improvement.|[blog post](https://blog.torproject.org/blog/tor-weekly-news-%E2%80%94-april-15th-2015)||
|2015-04-08|||meek|Implemented persistent connections for meek-azure, increasing performance.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2015-April/008637.html)||
|2015-03-09|||ipv4|geoip database updated to "March 3 2015 Maxmind GeoLite2 Country" (`geoip-db-digest C1EB5237F2FBAF63381D8551157F13D12EFCCA25`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=beda8d2934e41e9b4b5d36f172deed9e71e91f24)||
|2015-03-09|||ipv6|geoip6 database updated to "March 3 2015 Maxmind GeoLite2 Country" (`geoip6-db-digest 1F99B6B0EC78E9DB34D61AE7E0FC261D558E8E5D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=62714068d94772e74e7eb8c1ea63cfa5304a4403)||
|2015-02-28|||meek|Altered performance settings on the meek-google App Engine instance in an effort to reduce instance hours. Set max idle instances to 4 and min pending latency to 500 ms.|||
|2015-02-14|||meek|Release of Orbot v15-alpha-3, first release with meek.|[mailing list post](https://lists.mayfirst.org/pipermail/guardian-dev/2015-February/004243.html)||
|2015-01-22|||ipv4|geoip database updated to "January 7 2015 Maxmind GeoLite2 Country" (`geoip-db-digest 49D309B9663C4EFB8D126D84BBB373D7C84658C3`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=c3f8f5ab0e74db2269d55ff51a0918a41b374fc6)||
|2015-01-22|||ipv6|geoip6 database updated to "January 7 2015 Maxmind GeoLite2 Country" (`geoip6-db-digest 9B26276EA470137894566882885AD82701D38D62`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=a9ce0cd659fae01a139f4aed5745817717ccabc0)||
|2014-11-24|||ipv4|geoip database updated to "November 15 2014 Maxmind GeoLite2 Country" (`geoip-db-digest DC1A94D962AE165EF4AA1F14857A23C34875F39D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=8611c6bccd9fe4c688e83b28fb4e2b2b0fe7a6b3)||
|2014-11-24|||ipv6|geoip6 database updated to "November 15 2014 Maxmind GeoLite2 Country" (`geoip6-db-digest 923BA7ED922B2A4B30C9B76EE7E72D1D1714BFAF`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=5441c733e07beafaba61251b0fafed4bd96eaf40)||
|2014-11-17|||obfs4|Release of Tor Browser 4.5-alpha-1, first alpha release with obfs4. (Tor Browser changelog says 2014-11-14.)|[blog post](https://blog.torproject.org/tor-browser-45-alpha-1-released)||
|2014-11-15|||meek|Moved the meek-google bridge to better hardware.|||
|2014-11-08|||meek|Changed the meek-google App Engine instance back to the F1 class, from F2.|||
|2014-10-31|||meek|Changed the meek-google App Engine instance to the F2 class again, from F1.|||
|2014-10-27|||meek|Changed the meek-google App Engine instance back to the F1 class, from F2.|||
|2014-10-25|||meek|Changed the bridge backing meek-google.|||
|2014-10-25|||meek|Changed the meek-google App Engine instance to the F2 class, from F1.|||
|2014-10-15|||meek scramblesuit|Tor Browser 4.0 released. This is the first stable release with meek and ScrambleSuit built in.|[blog post](https://blog.torproject.org/blog/tor-browser-40-released)||
|2014-10-14|||meek|Enabled PublishServerDescriptor on the meek-amazon bridge. Between 2014-09-29 and 2014-10-14, meek-amazon users were not being counted.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2014-October/007611.html)||
|2014-09-29|||meek|Changed the bridge backing meek-amazon.|||
|2014-09-29||cn||China blocks Instagram in response to ongoing protests in Hong Kong. A research paper by Hobbs and Roberts shows evidence for an increase in circumvention, but the measurable effect on Tor is slight if anything.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2014-01-01&end=2015-02-01&country=cn) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2014-01-01&end=2015-02-01&country=cn) [BBC article](https://www.bbc.com/news/technology-29409533) [research paper](http://www.margaretroberts.net/wp-content/uploads/2016/08/selfiecensorship.pdf)||
|2014-09-26|2014-12-15|hk||"Umbrella Revolution" protests in Hong Kong.|[relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2014-01-01&end=2015-02-01&country=hk) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2014-01-01&end=2015-02-01&country=hk)||
|2014-09-16|||meek|Switched meek-amazon to HTTPS.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/meek/13174)||
|2014-09-15|||flashproxy meek|Split the bridge running meek and flashproxy into separate processes in order to avoid spurious correlation in user counts.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2014-September/007486.html)||
|2014-08-29|2014-09-01||fte|Decrease in fte users, perhaps caused by an outage of one of the default Tor Browser bridges.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2014-September/007494.html)||
|2014-08-15|||meek|'How to use the “meek” pluggable transport' blog post is published.|[blog post](https://blog.torproject.org/how-use-meek-pluggable-transport)||
|2014-08-13|||ipv4|geoip database updated to "August 7 2014 Maxmind GeoLite2 Country" (`geoip-db-digest 9EF0A1874377BFB6413ED3F9EB5504B1DB17BE13`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b98e3f993617fb6cb2e5f41bfa49c16a21965a4c)||
|2014-08-13|||ipv6|geoip6 database updated to "August 7 2014 Maxmind GeoLite2 Country" (`geoip6-db-digest 542D349827A88738A04332DAFF2516A384BCC8FF`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=6235b4769d97df383472f8d0d5533b5b23a82f52)||
|2014-08-12||||Tor Browser 3.6.4 released.|[blog post](https://blog.torproject.org/tor-browser-364-and-40-alpha-1-are-released)||
|2014-08-12|||meek scramblesuit|Tor Browser 4.0-alpha-1 released. This is the first release to have meek and ScrambleSuit built in.|[blog post](https://blog.torproject.org/tor-browser-364-and-40-alpha-1-are-released)||
|~2014-07-28|||meek|Set up meek-amazon CDN configuration.|||
|2014-07-27|2014-09-23|ir||Iran blocks Tor directory authorities.|[ticket](https://bugs.torproject.org/tpo/applications/tor-browser/12727)||
|2014-07-18|||ipv4|geoip database updated to "July 10 2014 Maxmind GeoLite2 Country" (`geoip-db-digest F2E34A314F2101E3F5AE0774660C4BA670646B8D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=6d5efbef22739364c9d02d9237b66d26ac3ebb57)||
|2014-07-18|||ipv6|geoip6 database updated to "July 10 2014 Maxmind GeoLite2 Country" (`geoip6-db-digest 45893A1BDDABACCEB346DE4644A155450FD28B0E`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=6345dfa1fe6651f0ce447c78028b30c3d5a1b6d0)||
|2014-06-10|||ipv4|geoip database updated to "June 4 2014 Maxmind GeoLite2 Country" (`geoip-db-digest BFC7453BBEAD611B7FF97AD71BE3392AA8BCFBE3`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=555c43cd03b8a9c8ed1bb230ba206b3b62b9fec8)||
|2014-06-10|||ipv6|geoip6 database updated to "June 4 2014 Maxmind GeoLite2 Country" (`geoip6-db-digest E0A79ABC85672AACD47878029C2C383D4C669335`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=40579cb6a5dca93f8d85d632f4589d29ab062a7c)||
|2014-06-01|2014-06-19|ru|<OR> relay|Rapid increase of relay users in Russia, going from 80K to 200K before settling in around 150K.||X|
|2014-05-08|||flashproxy meek|Reinstalled the bridge running meek and flash proxy.|||
|2014-04-29|||flashproxy fte obfs2 obfs3|Release of Tor Browser 3.6, the first stable release with integrated pluggable transports.|[blog post](https://blog.torproject.org/tor-browser-36-released) [transport graph](https://metrics.torproject.org/userstats-bridge-transport.html?start=2014-03-17&end=2014-06-15&transport=obfs2&transport=obfs3&transport=websocket&transport=%3COR%3E)||
|2014-04-11||||Release of Tor Browser 3.6-beta-2.|[blog post](https://blog.torproject.org/tor-browser-36-beta-2-released)||
|2014-03-18|||flashproxy fte obfs2 obfs3|Release of Tor Browser 3.6-beta-1, the first release with integrated pluggable transports.|[blog post](https://blog.torproject.org/tor-browser-36-beta-1-released)||
|2014-02-25|||ipv4|geoip database updated to "February 7 2014 Maxmind GeoLite2 Country" (`geoip-db-digest 182195DB4DA9A979A829012F71CF128FAF1203F7`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=2658e70d16eccfdd4b37d23a8399fce492d0eea1)||
|~2014-02-15|||flashproxy meek|Began running meek-server on bridge already hosting websocket-server for flash proxy.|||
|2014-02-13|||ipv6|geoip6 database updated to "February 7 2014 Maxmind GeoLite2 Country" (`geoip6-db-digest FB95DF46D6B29167668F4D2CAC9F947C4B2A0C26`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=f6f691df7373cbf571f0e8d98deff87fb9a1e34e)||
|2014-02-08|||ipv4|geoip database updated to "February 7 2014 Maxmind GeoLite2 Country" (`geoip-db-digest FA903A1122A248E107A1C17A5AC50A5852F03966`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=26dd328891b26fb3861851a6963c6dd628a35772)||
|2014-01-31|||meek|First public announcement of meek.|[mailing list post](https://lists.torproject.org/pipermail/tor-dev/2014-January/006159.html)||
|2013-12-04|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.18-rc-1-pt1 and 2.4.18-rc-2-pt1.|[blog post](https://blog.torproject.org/pluggable-transports-bundles-2418-rc-1-pt1-and-2418-rc-2-pt1-firefox-17011esr)||
|2013-11-11|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.17-rc-1-pt2.|[blog post](https://blog.torproject.org/pluggable-transports-bundles-2417-rc-1-pt2-firefox-17010esr)||
|2013-11-04|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.17-rc-1-pt1.|[blog post](https://blog.torproject.org/pluggable-transports-bundles-2417-rc-1-pt1-firefox-17010esr)||
|2013-11-03|||<OR> relay|Microsoft adds the Mevade/Sefnit botnet signature to their Malicious Software Removal Tool.|[blog post](https://blogs.technet.microsoft.com/mmpc/2014/01/09/tackling-the-sefnit-botnet-tor-hazard/)||
|2013-10-27|||<OR> relay|Microsoft adds the Mevade/Sefnit botnet signature to various security scanners.|[blog post](https://blogs.technet.microsoft.com/mmpc/2014/01/09/tackling-the-sefnit-botnet-tor-hazard/)||
|2013-10-11|||ipv4|geoip database updated to "October 2 2013 Maxmind GeoLite Country" (`geoip-db-digest A28267CED18A1D80B4298796E9FE42EC755420C0`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=3b0265198fc8a55279f2a8501104d2c54900c9d0)||
|2013-09-23|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.17-beta-2-pt3.|[blog post](https://blog.torproject.org/pluggable-transports-bundles-2417-beta-2-pt3-firefox-1709esr)||
|2013-09-10|||ipv4|geoip database updated to "September 4 2013 Maxmind GeoLite Country" (`geoip-db-digest CB632F60547F141E06FB0705D1F171047165722E`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=13d192c1d8aebb331f49621abb0702624fdceef8)||
|2013-08-19|~2014-04-28||<OR> relay|Relay users increase globally from about 800K to over 5M, when computers in the [Mevade/Sefnit botnet](https://en.wikipedia.org/wiki/Mevade_Botnet) began using Tor to communicate. The user count decreased in the following months through efforts to clean up the botnet. Sometime in 2014-04, the botnet switched from using Tor to using SSH.|[blog post](https://blog.torproject.org/blog/how-to-handle-millions-new-tor-clients) [tech report](https://research.torproject.org/techreports/botnet-tr-2013-11-20.pdf) [analysis](https://blog.fox-it.com/2013/09/05/large-botnet-cause-of-recent-tor-network-overload/) [switch to SSH](https://www.facebook.com/notes/protect-the-graph/sefnit-is-back/1448087102098103)||
|2013-08-12|||ipv4|geoip database updated to "August 7 2013 Maxmind GeoLite Country" (`geoip-db-digest 83CCB5AF823A5CCF3C86C3CA33AF801D4E8996EC`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=41bf8fa8892bc7ee2fc5c1d176535e9218d15afa)||
|2013-08-10|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.15-beta-2-pt1.|[blog post](https://blog.torproject.org/pluggable-transports-bundles-2415-beta-2-pt1-firefox-1708esr)||
|2013-07-08|||ipv4|geoip database updated to "July 3 2013 Maxmind GeoLite Country" (`geoip-db-digest 4D558EA73DD91A0361DE3FA3E83171DCD38D1A2D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=2a61b0dd6be2eba9525b777dcb4400b93b695a2d)||
|2013-06-05|||ipv4|geoip database updated to "June 5 2013 Maxmind GeoLite Country" (`geoip-db-digest 5E570BB92DBEE1D517E35DAA4A52F58FDA6BB44E`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d34753174eeaaae73be9cb9890368fab04afefd2)||
|2013-06-02|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.12-alpha-2-pt1.|[blog post](https://blog.torproject.org/pluggable-transports-bundles-2412-alpha-2-pt1-firefox-1706esr)||
|2013-05-13|||ipv4|geoip database updated to "May 9 2013 Maxmind GeoLite Country" (`geoip-db-digest 2ADCA1913666A685B141C03E7B2F50B3DB84FDC9`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=f8053179c972130482b70f62695ad0b0265e377d)||
|2013-04-08|||ipv4|geoip database updated to "April 3 2013 Maxmind GeoLite Country" (`geoip-db-digest 7DDD315EBCDC2A8BCA47A8B5153EB697947AC851`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b41f03f6dfd855e34628d935340d0f6292c82af8)||
|2013-03-19|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 0.2.4.11-alpha-2.|[blog post](https://blog.torproject.org/new-pluggable-transports-bundles-02411-alpha-flashproxy-obfsproxy)||
|2013-03-07|||ipv4|geoip database updated to "March 6 2013 Maxmind GeoLite Country" (`geoip-db-digest CB30D739CF972BEE0EF0635838A2AD76E2171004`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=3dde6d5d29640fcab583e0f4a16b6aa1b000618d)||
|2013-02-08|||ipv4|geoip database updated (`geoip-db-digest 29DF86915FF87E2FBE12F3514776B7292B556CCD`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=adff7f944a50dd03bc74967343a376637b4195d1)||
|2013-01-13|||flashproxy obfs2 obfs3|Release of the pluggable transports browser bundle 2.4.7-alpha-1, containing flash proxy, obfs2, and obfs3 built in and enabled by default.|[blog post](https://blog.torproject.org/combined-flash-proxy-pyobfsproxy-browser-bundles) [ticket](https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/trac/7824)||
|2013-01-05|||ipv4|geoip database updated to "January 2 2013 Maxmind GeoLite Country" (`geoip-db-digest DBBBA6D1F6CD90E860DDD42C90A21CF8A1B8395F`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=32114d70ae595eb570ceb7d4f9648fe83a361605)||
|2012-12-13|||ipv4|geoip database updated to "December 5 2012 Maxmind GeoLite Country" (`geoip-db-digest E00C7CD522D9ED6BEF69C6A904DCE51EC54EB768`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=6bdfa295b5bc921cba33bde15e1724a04780dea1)||
|2012-12-06|||ipv4|geoip database updated to "December 5 2012 Maxmind GeoLite Country" (`geoip-db-digest 5A258599E3F768D0CEFBBD26F1D039760D43BB15`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=c9a5d613a6f12b7824ab03aa7c991a756fd14e19)||
|2012-11-28|||ipv4|geoip database updated to "November 7 2012 Maxmind GeoLite Country" (`geoip-db-digest 0D1734EB51EC9168C6428CD771945567B927F45C`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d2cfd52d2c41a60cbf297aa9792cb63b22ad2ef9)||
|2012-10-16|||ipv6|geoip6 database updated to "October 16 2012 Maxmind GeoLite IPv6 Country" (`geoip6-db-digest 7F82A502C248B0CFBCCF6FE370919E34E04A21FA`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=96a731347592f1cbd4ddba9bfd7bc418344c4e38)||
|2012-07-06|||ipv4|geoip database updated to "May 1 2012 Maxmind GeoLite Country" (`geoip-db-digest 207A8167FC83230884A7B463B8EE12385CF1874F`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=4e7552e5528e9e7f2f8ddaee81fe2da9606091b2)||
|2012-06-15|||<OR>|Release of tor 0.2.3.17-beta. Changes the TLS ciphersuite list to match that of Firefox 8, to evade blocking by China.|[ticket](https://bugs.torproject.org/tpo/core/tor/4744) [censorshipwiki entry](https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki/CensorshipCircumvention/TorChanges#a0.2.3.17-beta)||
|2012-06-13|||ipv4|geoip database updated to "June 6 2012 Maxmind GeoLite Country" (`geoip-db-digest B7DC8C42403B1E0B50C671587DE406AED8DC5831`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=229abbf4bbb86b3fd2c138ec62460e1a0fda395f)||
|~2012-05-15|~2012-12-15|et|<OR>|Ethiopia blocks Tor TLS.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/6045) [blog post 1](https://blog.torproject.org/blog/ethiopia-introduces-deep-packet-inspection) [blog post 2](https://blog.torproject.org/blog/update-censorship-ethiopia) [sample packets](https://gitweb.torproject.org/censorship-timeline.git/tree/binaries/ethiopia?id=3b09a1571c67f53dc81533c81f99cfadfd550d26) [tor patches](https://gitweb.torproject.org/censorship-timeline.git/tree/patches/ethiopia?id=3b09a1571c67f53dc81533c81f99cfadfd550d26)||
|2012-05-07|||ipv4|geoip database updated to "May 1 2012 Maxmind GeoLite Country" (`geoip-db-digest 207A8167FC83230884A7B463B8EE12385CF1874F`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=24731ce6a779d67af832d882425bf7a6c6a6f9d2)||
|2012-04-12|||obfs2|Release of "Tor Obfsproxy Browser Bundle" 2.3.12-4.|[package archive](https://archive.torproject.org/tor-package-archive/obfsproxy/) [commit](https://gitweb.torproject.org/project/web/webwml.git/commit/projects/en/obfsproxy.wml?id=69f23bb361501c4cff1faeeeddb213f6c96b841a)||
|2012-04-11|||ipv4|geoip database updated to "April 3 2012 Maxmind GeoLite Country" (`geoip-db-digest A27BE984989AB31C50D0861C7106B17A7EEC3756`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b395b59353ea4b1b3221e220b47420b93aadcd0b)||
|2012-03-28|||ipv6|geoip6 database updated to "February 22 2012 Maxmind GeoLite IPv6 Country" (`geoip6-db-digest 2B442C5D9781145C0172ECC250DF71E25F0A957E`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=c03e3d66a910d103d3cce50a3bc1b778f68c36f2)||
|2012-03-08|||ipv4|geoip database updated to "March 6 2012 Maxmind GeoLite Country" (`geoip-db-digest 51EA5ED511A11D31FB4DAFCEC05B5347F6462B56`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=c5d7ee714f161f4963948cf948fb94a072b0017c)||
|2012-03-01|2013-08-19|kz|<OR>|Kazakhstan blocks Tor TLS by ClientHello and ServerHello fingerprints.|[ticket](https://bugs.torproject.org/tpo/anti-censorship/censorship-analysis/6140) [tor patches](https://gitweb.torproject.org/censorship-timeline.git/tree/patches/kazakhstan/notes.txt?id=3b09a1571c67f53dc81533c81f99cfadfd550d26)||
|2012-03-01|||ipv6|geoip6 database updated to "February 22 2012 Maxmind GeoLite IPv6 Country" (`geoip6-db-digest E39E1056F219DDF6E1C12F27CC50963D0F9774ED`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=abb886014e1ee35909e8876fe3361cbfd26cc27c)||
|2012-02-22|||obfs2|Release of "Tor Obfsproxy Browser Bundle" 2.3.12-3, for Windows and Linux only.|[package archive](https://archive.torproject.org/tor-package-archive/obfsproxy/) [commits](https://gitweb.torproject.org/project/web/webwml.git/diff/projects/en/obfsproxy.wml?id2=ab4e421afab1a3ff2a6fb1a8cbe33cd63a24ceda&id=b3ba7c694b8dcd21ab738d753d5dac05e7157ba6)||
|2012-02-18|||obfs2|Release of "Tor Obfsproxy Browser Bundle" 2.3.12-2, for Windows and Mac OS X only.|[package archive](https://archive.torproject.org/tor-package-archive/obfsproxy/) [commit](https://gitweb.torproject.org/project/web/webwml.git/commit/projects/en/obfsproxy.wml?id=b3ba7c694b8dcd21ab738d753d5dac05e7157ba6)||
|2012-02-13|||obfs2|Release of "Tor Obfsproxy Browser Bundle" 2.3.12, containing 13 obfs2 bridges (removed 128.30.30.25:51420 relative to version 2.3.10).|[blog post](https://blog.torproject.org/obfsproxy-next-step-censorship-arms-race) [package archive](https://archive.torproject.org/tor-package-archive/obfsproxy/) [commits](https://gitweb.torproject.org/project/web/webwml.git/diff/projects/en/obfsproxy.wml?id2=d83582eeefe41ffb0125e47d4bde8b3c7f629511&id=34941f5f8d7f3452b494e384b556a21fe763ad33)||
|2012-02-11|||obfs2|First release of "Tor Obfsproxy Browser Bundle", containing 2 obfs2 bridges. Version number unknown; no bundle containing 2 bridges exists at https://archive.torproject.org/tor-package-archive/obfsproxy/.|[blog post](https://blog.torproject.org/obfsproxy-next-step-censorship-arms-race)||
|2012-02-11|||obfs2|Release of "Tor Obfsproxy Browser Bundle" 2.3.10, containing 14 obfs2 bridges.|[blog post](https://blog.torproject.org/obfsproxy-next-step-censorship-arms-race) [package archive](https://archive.torproject.org/tor-package-archive/obfsproxy/) [commits](https://gitweb.torproject.org/project/web/webwml.git/diff/projects/en/obfsproxy.wml?id2=8e52e5e4f8b9cb7b7cb65602446cfec0e0d17ff0&id=d83582eeefe41ffb0125e47d4bde8b3c7f629511)||
|2012-02-09|||ipv4|geoip database updated to "February 7 2012 Maxmind GeoLite Country" (`geoip-db-digest 3BCA888461BCC79CA29E78603DC197090F8C96CB`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=4180624a7d5a3e528be2cf2fe7f9f673b3964a23)||
|2012-02-08|2012-02-11|ir|<OR>|Iran partially blocks Tor.|[blog post](https://blog.torproject.org/iran-partially-blocks-encrypted-network-traffic) [relay graph](https://metrics.torproject.org/userstats-relay-country.html?start=2012-01-01&end=2012-04-01&country=ir) [bridge graph](https://metrics.torproject.org/userstats-bridge-country.html?start=2012-01-01&end=2012-04-01&country=ir)||
|2012-01-05|||ipv4|geoip database updated to "January 3 2012 Maxmind GeoLite Country" (`geoip-db-digest DCF8969A2B080FAE2664F1D46F758B1CB08C286C`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=1db1b23a7b12f4e9b0419b7264456ad7817678e0)||
|2011-12-08|||ipv4|geoip database updated to "December 6 2011 Maxmind GeoLite Country" (`geoip-db-digest 916A3CA8B7DF61473D5AE5B21711F35F301CE9E8`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=ff2c9acbb39d7ae917501b1e719cf5be994fe4e2)||
|2011-11-07|||ipv4|geoip database updated to "November 1 2011 Maxmind GeoLite Country" (`geoip-db-digest F730E870057D6CA19EE55BC80604E41BEEB5B607`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=6d45c6d548bd3467cbc816327d1a7778e6fc9539)||
|2011-10-13|||ipv4|geoip database updated to "October 4 2011 Maxmind GeoLite Country" (`geoip-db-digest 25138998CF10DDAC1B4F745EBC6790DA4E5A6F1B`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=ee545cd4cb32b2aa6a37285d0afcd1e4d11fa27c)||
|2011-09-13|||<OR>|Release of tor 0.2.3.4-alpha. Changes the expiration time of TLS certificates, to evade blocking in Iran.|[ticket](https://bugs.torproject.org/tpo/core/tor/4014) [censorshipwiki entry](https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki/CensorshipCircumvention/TorChanges#a0.2.3.4-alpha)||
|2011-09-12|||ipv4|geoip database updated to "September 6 2011 Maxmind GeoLite Country" (`geoip-db-digest F39A5F424559CF5654C793531982BA536D1CEDCA`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=679f617345dc31c46560b09d3b5d5d350e06ab23)||
|2011-08-08|||ipv4|geoip database updated to "August 2 2011 Maxmind GeoLite Country" (`geoip-db-digest F8D51025DD9B5CC482B3171D3B43FB81868568A9`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=c75ee94ab41e3a76e8159366defe3159614b497c)||
|2011-07-07|||ipv4|geoip database updated to "July 1 2011 Maxmind GeoLite Country" (`geoip-db-digest CCABBFAF7036BA3E7580D7F71845AC0673B9E922`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=51d6e950235a76cbc2eaef0e2a28bd8da338ac2a)||
|2011-06-05|||ipv4|geoip database updated to "June 1 2011 Maxmind GeoLite Country" (`geoip-db-digest C5C0785F3E1DF5319609B87FCA295FC7D0CE6215`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=bf4b819aae43c11db824f3e790f8a92260e9988e)||
|2011-05-11|||ipv4|geoip database updated to "May 1 2011 Maxmind GeoLite Country" (`geoip-db-digest 9CA15F4E4D1235116956F3DEA9B3E8A714D15D5D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=e7b10e5ecfdf3ede4123f921c1d2419268235176)||
|2011-04-04|||ipv4|geoip database updated to "April 1 2011 Maxmind GeoLite Country" (`geoip-db-digest 754DCDF6CCF1BB631B0C14D2EBFECE649501A88D`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=0cdd2629418f019bda5fa2daa271aae4f7131fa6)||
|2011-03-08|||ipv4|geoip database updated to "March 1 2011 Maxmind GeoLite Country" (`geoip-db-digest 8CCD8DB72C71E6D764DF888511DC37DD5A13ED97`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d080fe8db14817e6eaf37359c638805909a306a1)||
|2011-02-03|||ipv4|geoip database updated to "February 1 2011 Maxmind GeoLite Country" (`geoip-db-digest 12EBCF2FB208695E447EF151038881F08FDCBFD8`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=9c2cb6fc8929cb02d500e8d276445205937ab01b)||
|2011-01-25|||<OR>|Release of tor 0.2.2.22-alpha. Changes the TLS Diffie–Hellman parameter to match that used by Apache mod_ssl, to evade blocking in Iran.|[censorshipwiki entry](https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki/CensorshipCircumvention/TorChanges#a0.2.2.22-alpha) [tor TLSHistory](https://trac.torproject.org/projects/tor/wiki/org/projects/Tor/TLSHistory#Stage2:Tor0.2.0.20through0.2.3.6)||
|2011-01-10|||ipv4|geoip database updated to "January 1 2011 Maxmind GeoLite Country" (`geoip-db-digest 9D4EBE51F94EAAD7DC40DF26837E5E892345BB7C`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d43cba6c690d9c227b13cd7426285b82b9523611)||
|2010-12-08|||ipv4|geoip database updated to "December 1 2010 Maxmind GeoLite Country" (`geoip-db-digest 7726B7A80C3EC4534EA2A5C62D2AC1096931DD39`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=35148ba5329eef357bd020d1ef5f2d10a1c28693)||
|2010-10-04|||ipv4|geoip database updated to "October 1 2010 Maxmind GeoLite Country" (`geoip-db-digest F090EBEEC4A0E05B2A2D33EE9F2AA8B73FB2C350`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=bad609ae6b5505783034cd3951afd382c528c532)||
|2010-09-08|||ipv4|geoip database updated to "September 1 2010 Maxmind GeoLite Country" (`geoip-db-digest 952F4038C3D493AB62673577191B0F779A40D7BB`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=80d9dbac20fec1585e03c04da4f321ece3804ce4)||
|2010-08-03|||ipv4|geoip database updated to "August 1 2010 Maxmind GeoLite Country" (`geoip-db-digest 60B2587014A74FF8E5A1BD52AD081F02D57098D5`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=f206209abfc1f98bbbd0be5b6e36fdec6709953d)||
|2010-06-02|||ipv4|geoip database updated to "June 1 2010 Maxmind GeoLite Country" (`geoip-db-digest 0F7A148E7A934235263345AD913E44C9E44BF495`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=f60e4bcdd9b24cdc1d9b05a94088eb4aef6c7fec)||
|2010-05-06|||ipv4|geoip database updated to "May 1 2010 Maxmind GeoLite Country" (`geoip-db-digest 2F36F923FD3368E208924A81169F8B4B3468A6E8`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=befcc84f432800532a092402daecd2c95addf45c)||
|2009-06-03|||ipv4|geoip database updated to "June 3 2009 ip-to-country db" (`geoip-db-digest 507DBE49979319B61E8EC637BDC72D53C91A907A`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=48bf1d97eeed9fd0812e281cbc1f08c6c5ade89c)||
|2009-04-12|||ipv4|geoip database updated to "April 3 2009 ip-to-country db" (`geoip-db-digest 94674ED08A3AB5A5722749314870F176776CBEA3`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=72e4d48c7a8a7722d01c914766a8a663f97c77ec)||
|2009-03-05|||ipv4|geoip database updated to "February 26 2009 ip-to-country db" (`geoip-db-digest 07D75C8790B6D575061EE3D19B46BD4478B7AAEC`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=0f46c1dc6ecf2aef559983e555b2237fc5c08744)||
|2009-02-12|||ipv4|geoip database updated to "January 23 2009 ip-to-country db" (`geoip-db-digest E6455B416994835C4F355AF8386F71D606C56937`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=b03f78e8af442bfd554023fbe6ac0b17b664e496)||
|2009-01-06|||ipv4|geoip database updated to "December 19 2008 ip-to-country db" (`geoip-db-digest 79365660714FF9D3F5AD1DE427A604251188F94B`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d1351750ed7c7c7f8d8716d1a9a004c96cce5f2c)||
|2008-09-23|||ipv4|geoip database updated to "September 1 2008 ip-to-country db" (`geoip-db-digest 64129F664F291BC3D2D746BBBFD83FE7CB2264D3`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=29abfab8bfdc14d4f2f725aee6755dfc2bd6036b)||
|2008-06-11|||ipv4|geoip database updated to "June 9 2008 ip-to-country db" (`geoip-db-digest 43DBBB309037C48A70B2C31512E21D45E95C72B0`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=89c903d9aa5b02f1b212178cdc3d41430060959e)||
|2008-05-28|||ipv4|geoip database updated (`geoip-db-digest C4F4C0FDC9D15AEA7132404B6D51E11ACB828023`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=d232d2d188f405b50cc6f857be025079fd4a9d1f)||
|2008-05-28|||ipv4|geoip database updated (`geoip-db-digest 947841EF4BED1B4E891BBDEC3E7643D62AFDD544`).|[commit](https://gitweb.torproject.org/tor.git/commit/?id=a1aeaf308964a18a876120b97cabe35dc89f1d86)||