An incomplete timeline of events that might affect user metrics, to aid in the interpretation of data and graphs from https://metrics.torproject.org/.
Other data sources:
* [[OONI/censorshipwiki]]
* [https://ooni.torproject.org/post/] (Explanatory blog posts from OONI)
* [query:?component=Circumvention%2FCensorship+analysis&order=time Circumvention/Censorship Analysis tickets] (not all events have been imported into this page)
* [https://gitweb.torproject.org/builders/tor-browser-bundle.git/tree/Bundle-Data/Docs/ChangeLog.txt Tor Browser ChangeLog.txt] (for release dates)
* [http://lists.infolabe.net/lists/listinfo/infolabe-anomalies infolabe-anomalies mailing list] (automatic detection of anomalies in user counts)
* [https://internet-freedom-science.org/circumvention-survey/database.zip circumvention-survey database] (see `database.attacks` for a list of times censors have tried to block Tor)
* http://bloqueios.info/en/timeline/ timeline of application blocking orders in Brazil
* https://trends.google.com/trends/explore?q=Tor%20Browser - Google Trends results for e.g. "Tor Browser"
* Edit history of the [https://en.wikipedia.org/w/index.php?title=Internet_censorship_and_surveillance_by_country&action=history Internet censorship by country] article on Wikipedia.
* "Last Month In Internet Intelligence" posts at https://internetintel.oracle.com/blogs.html.
* geoip database changes: see `scrape-geoip` in [[#tools|metrics-timeline-tools]]. (geoip entries last updated 2019-05-31.)
**Guide to start and end dates:** 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.||
When you add a link, make sure to keep it as an absolute URL; i.e., write `https://trac.torproject.org/projects/tor/wiki/doc/Page`, not `wiki:Page` or `[[Page]]`. The URLs are used in other contexts, like https://metrics.torproject.org/userstats-relay-country.html, where only absolute URLs make sense.
||=start date =||=end date =||=places =||=protocols =||=description =||=links =||
||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. ||[https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki/CensorshipCircumvention/TorChanges#a0.2.2.22-alpha censorshipwiki entry] [https://trac.torproject.org/projects/tor/wiki/org/projects/Tor/TLSHistory#Stage2:Tor0.2.0.20through0.2.3.6 tor TLSHistory] ||
||2011-09-13 || || ||<OR> ||Release of tor 0.2.3.4-alpha. Changes the expiration time of TLS certificates, to evade blocking in Iran. ||[https://bugs.torproject.org/4014 ticket] [https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki/CensorshipCircumvention/TorChanges#a0.2.3.4-alpha censorshipwiki entry] ||
||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/. ||[https://blog.torproject.org/obfsproxy-next-step-censorship-arms-race blog post] ||
||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). ||[https://blog.torproject.org/obfsproxy-next-step-censorship-arms-race blog post] [https://archive.torproject.org/tor-package-archive/obfsproxy/ package archive] [https://gitweb.torproject.org/project/web/webwml.git/diff/projects/en/obfsproxy.wml?id2=d83582eeefe41ffb0125e47d4bde8b3c7f629511&id=34941f5f8d7f3452b494e384b556a21fe763ad33 commits] ||
||2012-02-18 || || ||obfs2 ||Release of "Tor Obfsproxy Browser Bundle" 2.3.12-2, for Windows and Mac OS X only. ||[https://archive.torproject.org/tor-package-archive/obfsproxy/ package archive] [https://gitweb.torproject.org/project/web/webwml.git/commit/projects/en/obfsproxy.wml?id=b3ba7c694b8dcd21ab738d753d5dac05e7157ba6 commit] ||
||2012-02-22 || || ||obfs2 ||Release of "Tor Obfsproxy Browser Bundle" 2.3.12-3, for Windows and Linux only. ||[https://archive.torproject.org/tor-package-archive/obfsproxy/ package archive] [https://gitweb.torproject.org/project/web/webwml.git/diff/projects/en/obfsproxy.wml?id2=ab4e421afab1a3ff2a6fb1a8cbe33cd63a24ceda&id=b3ba7c694b8dcd21ab738d753d5dac05e7157ba6 commits] ||
||2012-03-01 ||2013-08-19 ||kz ||<OR> ||Kazakhstan blocks Tor TLS by ClientHello and ServerHello fingerprints. ||[https://bugs.torproject.org/6140 ticket] [https://gitweb.torproject.org/censorship-timeline.git/tree/patches/kazakhstan/notes.txt?id=3b09a1571c67f53dc81533c81f99cfadfd550d26 tor patches] ||
||~2012-05-15 ||~2012-12-15 ||et ||<OR> ||Ethiopia blocks Tor TLS. ||[https://bugs.torproject.org/6045 ticket] [https://blog.torproject.org/blog/ethiopia-introduces-deep-packet-inspection blog post 1] [https://blog.torproject.org/blog/update-censorship-ethiopia blog post 2] [https://gitweb.torproject.org/censorship-timeline.git/tree/binaries/ethiopia?id=3b09a1571c67f53dc81533c81f99cfadfd550d26 sample packets] [https://gitweb.torproject.org/censorship-timeline.git/tree/patches/ethiopia?id=3b09a1571c67f53dc81533c81f99cfadfd550d26 tor patches] ||
||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. ||[https://bugs.torproject.org/4744 ticket] [https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki/CensorshipCircumvention/TorChanges#a0.2.3.17-beta censorshipwiki entry] ||
||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. ||[https://blog.torproject.org/combined-flash-proxy-pyobfsproxy-browser-bundles blog post] [https://bugs.torproject.org/7824 ticket] ||
||2013-08-19 ||~2014-04-28 || ||<OR> relay ||Relay users increase globally from about 800K to over 5M, when computers in the [https://en.wikipedia.org/wiki/Mevade_Botnet Mevade/Sefnit 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. ||[https://blog.torproject.org/blog/how-to-handle-millions-new-tor-clients blog post] [https://research.torproject.org/techreports/botnet-tr-2013-11-20.pdf tech report] [https://blog.fox-it.com/2013/09/05/large-botnet-cause-of-recent-tor-network-overload/ analysis] [https://www.facebook.com/notes/protect-the-graph/sefnit-is-back/1448087102098103 switch to SSH] ||
||2013-10-27 || || ||<OR> relay ||Microsoft adds the Mevade/Sefnit botnet signature to various security scanners. ||[https://blogs.technet.microsoft.com/mmpc/2014/01/09/tackling-the-sefnit-botnet-tor-hazard/ blog post] ||
||2013-11-03 || || ||<OR> relay ||Microsoft adds the Mevade/Sefnit botnet signature to their Malicious Software Removal Tool. ||[https://blogs.technet.microsoft.com/mmpc/2014/01/09/tackling-the-sefnit-botnet-tor-hazard/ blog post] ||
||2013-11-04 || || ||flashproxy obfs2 obfs3 ||Release of the pluggable transports browser bundle 2.4.17-rc-1-pt1. ||[https://blog.torproject.org/pluggable-transports-bundles-2417-rc-1-pt1-firefox-17010esr blog post] ||
||2013-11-11 || || ||flashproxy obfs2 obfs3 ||Release of the pluggable transports browser bundle 2.4.17-rc-1-pt2. ||[https://blog.torproject.org/pluggable-transports-bundles-2417-rc-1-pt2-firefox-17010esr blog post] ||
||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. ||[https://blog.torproject.org/pluggable-transports-bundles-2418-rc-1-pt1-and-2418-rc-2-pt1-firefox-17011esr blog post] ||
||2014-01-31 || || ||meek ||First public announcement of meek. ||[https://lists.torproject.org/pipermail/tor-dev/2014-January/006159.html mailing list post] ||
||2014-03-18 || || ||flashproxy fte obfs2 obfs3 ||Release of Tor Browser 3.6-beta-1, the first release with integrated pluggable transports. ||[https://blog.torproject.org/tor-browser-36-beta-1-released blog post] ||
||2014-04-11 || || || ||Release of Tor Browser 3.6-beta-2. ||[https://blog.torproject.org/tor-browser-36-beta-2-released blog post] ||
||2014-04-29 || || ||flashproxy fte obfs2 obfs3 ||Release of Tor Browser 3.6, the first stable release with integrated pluggable transports. ||[https://blog.torproject.org/tor-browser-36-released blog post] [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 transport graph] ||
||2014-05-08 || || ||flashproxy meek ||Reinstalled the bridge running meek and flash proxy. || ||
||2014-08-12 || || ||meek scramblesuit ||Tor Browser 4.0-alpha-1 released. This is the first release to have meek and ScrambleSuit built in. ||[https://blog.torproject.org/tor-browser-364-and-40-alpha-1-are-released blog post] ||
||2014-08-15 || || ||meek ||'How to use the “meek” pluggable transport' blog post is published. ||[https://blog.torproject.org/how-use-meek-pluggable-transport blog post] ||
||2014-08-29 ||2014-09-01 || ||fte ||Decrease in fte users, perhaps caused by an outage of one of the default Tor Browser bridges. ||[https://lists.torproject.org/pipermail/tor-dev/2014-September/007494.html mailing list post] ||
||2014-09-15 || || ||flashproxy meek ||Split the bridge running meek and flashproxy into separate processes in order to avoid spurious correlation in user counts. ||[https://lists.torproject.org/pipermail/tor-dev/2014-September/007486.html mailing list post] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2014-01-01&end=2015-02-01&country=cn relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2014-01-01&end=2015-02-01&country=cn bridge graph] [https://www.bbc.com/news/technology-29409533 BBC article] [http://www.margaretroberts.net/wp-content/uploads/2016/08/selfiecensorship.pdf research paper] ||
||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. ||[https://lists.torproject.org/pipermail/tor-dev/2014-October/007611.html mailing list post] ||
||2014-10-15 || || ||meek scramblesuit ||Tor Browser 4.0 released. This is the first stable release with meek and ScrambleSuit built in. ||[https://blog.torproject.org/blog/tor-browser-40-released blog post] ||
||2014-10-25 || || ||meek ||Changed the meek-google App Engine instance to the F2 class, from F1. || ||
||2014-10-27 || || ||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. || ||
||2014-11-08 || || ||meek ||Changed the meek-google App Engine instance back to the F1 class, from F2. || ||
||2014-11-15 || || ||meek ||Moved the meek-google bridge to better hardware. || ||
||2014-11-17 || || ||obfs4 ||Release of Tor Browser 4.5-alpha-1, first alpha release with obfs4. (Tor Browser changelog says 2014-11-14.) ||[https://blog.torproject.org/tor-browser-45-alpha-1-released blog post] ||
||2015-02-14 || || ||meek ||Release of Orbot v15-alpha-3, first release with meek. ||[https://lists.mayfirst.org/pipermail/guardian-dev/2015-February/004243.html mailing list post] ||
||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. || ||
||2015-04-08 || || ||meek ||Implemented persistent connections for meek-azure, increasing performance. ||[https://lists.torproject.org/pipermail/tor-dev/2015-April/008637.html mailing list post] ||
||2015-04-15 || || ||meek ||Tor Weekly News covers the meek-azure performance improvement. ||[https://blog.torproject.org/blog/tor-weekly-news-%E2%80%94-april-15th-2015 blog post] ||
||2015-04-19 || || ||meek obfs4 ||Release of Orbot v15 alpha 5, first release with obfs4. ||[https://lists.mayfirst.org/pipermail/guardian-dev/2015-March/004283.html mailing list post] ||
||2015-04-27 || || ||obfs4 ||Release of Tor Browser 4.5, the first stable release with obfs4. ||[https://blog.torproject.org/tor-browser-45-released blog post] ||
||2015-05-22 || || ||meek ||Rate-limited the meek-google bridge to 1.5 MB/s. || ||
||2015-06-02 || || ||meek ||Further rate-limited meek-google to 1.1 MB/s, from 1.5 MB/s. || ||
||2015-06-08 || || ||meek ||Rate-limited the meek-amazon bridge to 1.1 MB/s. || ||
||2015-07-20 ||2015-08-14 || ||meek ||Outage of meek-azure. ||[https://lists.torproject.org/pipermail/tor-talk/2015-July/038487.html mailing list post about start] [https://lists.torproject.org/pipermail/tor-talk/2015-August/038780.html mailing list post about end] ||
||2015-07-22 || || ||meek ||Published a workaround for the meek-azure outage that started 2015-07-20. ||[https://lists.torproject.org/pipermail/tor-talk/2015-July/038496.html mailing list post] ||
||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. ||[https://blog.torproject.org/tor-browser-50-released blog post] [https://blog.torproject.org/tor-browser-55a1-released blog post] [https://bugs.torproject.org/16634 ticket] ||
||2015-09-23 || || ||meek ||Upgraded meek-azure bridge from KVM to Xen. ||[https://blog.linode.com/2015/06/16/linode-turns-12-heres-some-kvm/ blog post] ||
||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. ||[https://lists.torproject.org/pipermail/tor-talk/2015-October/039231.html mailing list post about start] [https://lists.torproject.org/pipermail/tor-talk/2015-October/039234.html mailing list post about end] [https://bugs.torproject.org/17473 ticket] ||
||2015-10-02 || || ||meek ||Rate-limited the meek-azure bridge to 1.1 MB/s. (Azure grant expired.) || ||
||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. ||[https://bugs.torproject.org/17473 ticket] ||
||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. || ||
||2015-11-04 || || ||meek ||Tor Browser 5.0.4 and 5.5a4 released, containing a fixed fingerprint for meek-amazon. ||[https://blog.torproject.org/tor-browser-504-released 5.0.4 blog post] [https://blog.torproject.org/tor-browser-55a4-released 5.5a4 blog post] [https://bugs.torproject.org/17473 ticket] ||
||2015-12-14 || || ||meek ||Enabled client IP statistics on the meek-azure bridge. ||[https://bugs.torproject.org/13171#comment:7 comment] ||
||2015-12-20 || || ||meek ||Enabled client IP statistics on the meek-google bridge. ||[https://bugs.torproject.org/13171#comment:10 comment] ||
||2015-12-25 || || ||meek ||Established an unthrottled bridge [https://metrics.torproject.org/rs.html#details/C20658946DD706A7A2181159A1A04CD838570D04 C20658946DD706A7A2181159A1A04CD838570D04] for people who set up their own meek CDN configuration. || ||
||2016-01-11 || || ||meek ||Enabled client IP statistics on the meek-amazon bridge. ||[https://bugs.torproject.org/13171#comment:13 comment] ||
||2016-01-14 || || ||meek ||Increased rate limit of the meek-azure bridge to 3 MB/s, from 0.8 MB/s. || ||
||2016-01-15 || || ||meek ||Increased rate limit of the meek-google bridge to 3 MB/s, from 1.1 MB/s. || ||
||2016-01-16 || || ||meek ||Increased rate limit of the meek-amazon bridge to 3 MB/s, from 1.1 MB/s. || ||
||2016-01-29 ||2016-02-02 ||cn ||meek ||Temporary blocking of an Azure edge server in China. ||[https://lists.torproject.org/pipermail/tor-talk/2016-February/040199.html mailing list post] ||
||2016-02-17 ||2016-02-21 ||ug || ||Social media blackout in Uganda during presidential election. ||[https://freedomhouse.org/report/freedom-net/2016/uganda#a2-limits Freedom House report] ||
||2016-03-27 18:30:00 ||2016-03-27 20:30:00 || ||meek ||Outage of meek-azure bridge, caused by an expired TLS certificate. || ||
||2016-03-27 21:28:00 ||2016-03-31 17:20:00 || ||meek ||Temporarily ran an experimental branch for IPv6 counting on the meek-azure bridge. ||[https://gitweb.torproject.org/karsten/tor.git/log/?h=task-18460-2&id=b79d859 task-18460-2 branch] ||
||2016-04-28 || || ||fte ||Tor Browser 6.0a5 and 6.0a5-hardened released, which lacks the fte pluggable transport on Mac. ||[https://blog.torproject.org/blog/tor-browser-60a5-released 6.0a5 blog post] [https://blog.torproject.org/blog/tor-browser-60a5-hardened-released 6.0a5-hardened blog post] [https://bugs.torproject.org/18495 ticket] ||
||2016-05-02 ||2016-05-03 ||br ||<OR> ||WhatsApp block in Brazil ||[https://blog.torproject.org/blog/tracking-impact-whatsapp-blockage-tor blog post] [https://ooni.torproject.org/post/brazil-whatsapp-block/ OONI report] [http://bloqueios.info/en/casos/block-for-non-compliance-with-judicial-requests-for-user-data-3/ bloqueios report] ||
||2016-05-11 ||2016-05-13 ||ug || ||Social media blackout in Uganda following presidential inauguration. ||[https://advox.globalvoices.org/2016/05/17/ugandans-are-finally-back-on-social-media-after-days-long-blackout/ advox article] [https://ooni.torproject.org/post/uganda-social-media-blocked/ OONI report] [https://freedomhouse.org/report/freedom-net/2016/uganda#a2-limits Freedom House report] ||
||2016-05-13 || || ||meek ||meek-google's App Engine instance is suspended and meek-google stops working. ||[https://lists.torproject.org/pipermail/tor-talk/2016-June/041057.html mailing list post] ||
||2016-05-30 || || ||fte ||Tor Browser 6.0 released, which lacks the fte pluggable transport on Mac. ||[https://blog.torproject.org/blog/tor-browser-60-released 6.0 blog post] [https://bugs.torproject.org/18495 ticket] ||
||2016-06-01 || ||kz ||<OR> obfs4 ||Kazakhstan blocks vanilla Tor TLS. Users mostly switch to obfs4. ||[https://bugs.torproject.org/20348 ticket] ||
||2016-07-15 || ||tr ||<OR> ||Coup attempt in Turkey. A paper (§ 4.1) reports a decline in Tor users. ||[https://www.usenix.org/conference/foci17/workshop-program/presentation/tanash paper] [https://metrics.torproject.org/userstats-relay-country.html?start=2016-04-01&end=2016-09-01&country=tr relay graph] ||
||2016-08-18 || || ||meek ||Changed the meek-amazon CDN price class from "All" to "Use Only US, Canada and Europe." || ||
||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. ||[https://bugs.torproject.org/20216 ticket] ||
||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. ||[https://blog.torproject.org/blog/tor-0287-released-important-fixes 0.2.8.7 announcement] ||
||2016-08-31 || || ||bridge ||CollecTor begins publishing bridge stats from the new bridge authority Bifroest. ||[https://lists.torproject.org/pipermail/tor-dev/2016-August/011336.html post] ||
||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. ||[https://bugs.torproject.org/19690#comment:17 shutdown notice] [https://blog.torproject.org/blog/new-bridge-authority blog post] [https://metrics.torproject.org/networksize.html?start=2016-07-01&end=2016-09-23 loss of reporting bridges] ||
||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. ||[https://bugs.torproject.org/20216 ticket] ||
||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.) ||[https://bugs.torproject.org/20250 ticket] ||
||2016-09-23 || || ||obfs3 ||Default obfs3 bridges ndnop0 and ndnop2 upgrade and begin reporting statistics to the new bridge authority Bifroest. ||[https://lists.torproject.org/pipermail/metrics-team/2016-September/000217.html post on bridges not reporting statistics] ||
||2016-09-23 || || ||obfs4 ||Default obfs3 bridges ndnop3 and ndnop5 upgrade and begin reporting statistics to the new bridge authority Bifroest. ||[https://lists.torproject.org/pipermail/metrics-team/2016-September/000217.html post on bridges not reporting statistics] ||
||2016-09-23 || || ||obfs3 ||Default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint [https://metrics.torproject.org/rs.html#details/AF9F66B7B04F8FF6F32D455F05135250A16543C9 AF9F66B7B04F8FF6F32D455F05135250A16543C9]) upgrade and begin reporting statistics to the new bridge authority Bifroest. || ||
||~2016-09-23 ||2016-11-28 || ||obfs3 ||Outage of default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint [https://metrics.torproject.org/rs.html#details/AF9F66B7B04F8FF6F32D455F05135250A16543C9 AF9F66B7B04F8FF6F32D455F05135250A16543C9]). (Start date not known for sure, though it must have been after 2016-09-23; discussed in non-archived tor-team email.) || ||
||2016-09-24 || || ||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. || ||
||2016-09-28 || || ||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. || ||
||2016-10-02 ||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. ||[https://ooni.torproject.org/post/egypt-network-interference/#attempts-to-block-tor OONI report] ||
||2016-10-08 || ||et || ||Ethiopia declares a state of emergency and implements network blocks. ||[https://ooni.torproject.org/post/ethiopia-report/#internet-shutdown OONI report] ||
||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. ||[https://turkeyblocks.org/2016/10/08/google-drive-dropbox-blocked-in-turkey/ blocking article] [https://twitter.com/TurkeyBlocks/status/785054084856512512 unblocking tweet] [https://www.turkishminute.com/2016/10/09/turkey-lifts-block-dropbox-google-drive-onedrive-remains-blocked/ unblocking article] ||
||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. ||[https://bugs.torproject.org/20495 ticket] [https://lists.torproject.org/pipermail/tor-project/2016-October/000764.html initial email] [https://lists.torproject.org/pipermail/tor-project/2016-November/000778.html followup email] [https://groups.google.com/d/msg/traffic-obf/CSJLt3t-_OI/FnAqWqquAwAJ Orbot mail] ||
||2016-10-25 ||ongoing ||eg ||<OR> relay ||Egypt blocks Tor directory authorities and public relays by TCP RST. Bridges work. ||[https://ooni.torproject.org/post/egypt-network-interference/#attempts-to-block-tor OONI report] ||
||2016-10-28 || || ||meek ||Decreased the rate limit on the meek-amazon bridge to 1.0 MB/s, from 3.0 MB/s. || ||
||2016-10-30 || || ||meek ||Increased the rate limit on the meek-amazon bridge to 3.0 MB/s, from 1.0 MB/s. || ||
||2016-11-15 || || ||meek ||Tor Browser 6.0.6 is released, unbreaking meek on macOS 10.12 (Sierra). (See 2016-09-20 breaking event.) ||[https://blog.torproject.org/blog/tor-browser-606-released blog post] [https://bugs.torproject.org/20250#comment:29 ticket] ||
||2016-11-15 || || ||obfs4 ||Default obfs4 bridges ndnop3 and ndnop5 turn on timing obfuscation (`iat-mode`). ||[https://lists.torproject.org/pipermail/tor-project/2016-November/000780.html mailing list post] [https://bugs.torproject.org/20837 ticket] ||
||2016-11-16 09:20:45 || || || ||Tor Browser 6.5a4 is released. It changes the `app.update.url`. ||[https://blog.torproject.org/tor-browser-65a4-released blog post] [https://bugs.torproject.org/19481 ticket] ||
||2016-12-01 || ||by ||<OR> relay ||Belarus blocks the addresses of public Tor relays, apparently by RST injection. Bridges work, even unobfuscated ones. ||[https://bugs.torproject.org/20907 ticket] [https://geektimes.ru/post/283392/ article (Russian)] [https://ooni.torproject.org/post/belarus-fries-onion/ OONI blog post] ||
||2016-12-12 || ||tr ||<OR> ||Turkey blocks direct Tor connections. The order to block had come on 2016-11-04. ||[https://bugs.torproject.org/21014 ticket] [https://twitter.com/josswright/status/809379534420185089 tweet] [https://turkeyblocks.org/2016/12/18/tor-blocked-in-turkey-vpn-ban/ article] ||
||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. ||[https://blog.torproject.org/tor-browser-65a6-released blog post] ||
||2016-12-15 ||ongoing ||cd || ||The Democratic Republic of the Congo orders a block of social media services. ||[http://wlrn.org/post/congo-block-social-media-sites-ahead-protests-against-president article] [https://metrics.torproject.org/userstats-relay-country.html?start=2016-10-01&end=2016-12-20&country=cd relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2016-10-01&end=2016-12-20&country=cd bridge graph] ||
||2017-01-09 || || ||meek ||Decreased the rate limit on the meek-azure bridge to 2.0 MB/s, from 3.0 MB/s. || ||
||2017-01-22 || || ||meek ||1.0-beta release of GAEuploader, a tool that automates the setting up of meek. ||[https://lists.torproject.org/pipermail/tor-dev/2017-January/011812.html mailing list post] ||
||2017-01-24 || || ||snowflake ||Tor Browser 7.0a1 released, including Snowflake for GNU/Linux only. ||[https://blog.torproject.org/blog/tor-browser-70a1-released blog post] ||
||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. ||[https://blog.torproject.org/tor-browser-65-released blog post] [https://metrics.torproject.org/webstats-tb.html?start=2017-01-01&end=2017-06-01 graph] [https://bugs.torproject.org/19481 ticket] [https://bugs.torproject.org/22346#comment:1 comment about app.update.url] ||
||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. ||[https://bugs.torproject.org/22346 ticket] ||
||~2017-02-10 ||ongoing || ||<OR> exit ||Measurement error from bandwidth authority causes decrease in measured bandwidth in Europe. ||[https://lists.torproject.org/pipermail/tor-project/2017-February/000963.html mailing list post] ||
||2017-03-03 17:32:00 || || ||meek ||Stopped the meek-azure CDN endpoint az668014.vo.msecnd.net. ||[https://lists.torproject.org/pipermail/tor-project/2017-March/000981.html mailing list post] ||
||2017-03-03 17:34:00 || || ||meek ||Stopped the meek-azure CDN endpoint az786092.vo.msecnd.net. ||[https://lists.torproject.org/pipermail/tor-project/2017-March/000981.html mailing list post] ||
||2017-03-03 17:36:00 || || ||meek ||Stopped the (unused) meek-azure CDN endpoint meek-reflect.azureedge.net. ||[https://lists.torproject.org/pipermail/tor-project/2017-March/000981.html mailing list post] ||
||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. ||[https://blog.torproject.org/blog/tor-browser-651-released blog post] [https://bugs.torproject.org/21342 meek ticket] [https://bugs.torproject.org/21536 scramblesuit ticket] ||
||2017-03-22 || || ||meek ||Orbot 15.4.0 beta-2 multi is released, containing the new meek-azure CDN configuration. ||[https://lists.mayfirst.org/pipermail/guardian-dev/2017-March/005220.html mailing list post] [https://github.com/n8fr8/orbot/commit/6496cb11d61e0e42c48569c9eae303e0cd625e85 commit] ||
||2017-04-14 ||2017-08-20 || ||<OR> ||Directory authority maatuska's bwscanner stops operating, leading to a drop in traffic on some relays. ||[https://lists.torproject.org/pipermail/tor-consensus-health/2017-April/007845.html tor-consensus-health post about start] [https://lists.torproject.org/pipermail/tor-consensus-health/2017-August/008106.html tor-consensus-health post about end] [https://lists.torproject.org/pipermail/tor-dev/2017-April/012215.html tor-dev thread] [https://lists.torproject.org/pipermail/tor-consensus-health/2017-May/007908.html analysis] ||
||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. ||[https://blog.torproject.org/tor-browser-652-released blog post] [https://bugs.torproject.org/22346#comment:1 comment about app.update.url] ||
||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. ||[https://blog.torproject.org/tor-browser-70a3-released blog post] ||
||2017-05-06 16:20:00 || || ||snowflake ||Set `AssumeReachable 1` on the Snowflake bridge [https://metrics.torproject.org/rs.html#details/2B280B23E1107BB62ABFC40DDCC8824814F80A72 2B280B23E1107BB62ABFC40DDCC8824814F80A72] in an attempt to make it start publishing statistics. ||[https://lists.torproject.org/pipermail/tor-dev/2017-May/012243.html mailing list post] ||
||2017-05-16 || ||ua || ||Ukraine blocks Russian-operated web services. Relay and bridge users increase over 5×. May be partly attributable to the [https://freeu.online/ FreeU Browser] , a browser produced and advertised by Mail.ru that includes a tor client. ||[https://bugs.torproject.org/22369 ticket] [https://www.rt.com/business/388502-ukraine-bans-vk-yandex/ news article] [https://www.reddit.com/r/TOR/comments/6c9ig1 Reddit post] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-01&end=2017-05-21&country=ua&events=on relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2017-05-01&end=2017-05-21&country=ua bridge graph] [https://tjournal.ru/44669-vkontakte-predlozhila-ukraincam-peredelannii-brauzer-amigo-s-tor-dlya-obhoda-blokirovok news article on FreeU] ||
||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. || ||
||2017-05-25 || || ||obfs4 ||Set `AssumeReachable 1` on the default obfs4 bridges [https://metrics.torproject.org/rs.html#details/C8CBDB2464FC9804A69531437BCF2BE31FDD2EE4 cymrubridge31] and [https://metrics.torproject.org/rs.html#details/0BAC39417268B96B9F514E7F63FA6FBA1A788955 cymrubridge33] in an attempt to make them publish statistics. ||[https://lists.torproject.org/pipermail/tor-dev/2017-May/012283.html mailing list post] ||
||2017-06-07 || || ||ipv6 obfs4 ||Tor Browser 7.0 released. Adds an IPv6 address for default obfs4 bridge Lisbeth. Adds new default obfs4 bridges [https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4 frosty] and [https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71 dragon]. ||[https://blog.torproject.org/blog/tor-browser-70-released blog post] [https://bugs.torproject.org/22429 IPv6 ticket] [https://bugs.torproject.org/22468 frosty and dragon ticket] ||
||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. ||[https://bugs.torproject.org/20348#comment:193 graph showing failed connections] ||
||2017-06-18 22:00:00 ||2017-06-23 10:00:00 || ||obfs4 ||Outage of default obfs4 bridge [https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4 frosty]. ||[https://lists.torproject.org/pipermail/tor-project/2017-June/001211.html mailing list post] ||
||2017-06-19 18:00:00 ||2017-06-23 10:00:00 || ||obfs4 ||Outage of default obfs4 bridge [https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71 dragon]. ||[https://lists.torproject.org/pipermail/tor-project/2017-June/001211.html mailing list post] ||
||2017-06-26 18:00:00 ||2017-07-03 02:00:00 || ||obfs4 ||Outage of default obfs4 bridge [https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4 frosty]. ||[https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html mailing list post] ||
||2017-06-26 22:00:00 ||2017-07-02 02:00:00 || ||obfs4 ||Outage of default obfs4 bridge [https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71 dragon]. ||[https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html mailing list post] ||
||2017-07-02 || || || ||deb.torproject.org upgrades from tor 0.2.9 to tor 0.3.0 ||[https://metrics.torproject.org/versions.html?start=2017-05-01&end=2017-07-15 relay versions graph] [https://twitter.com/nusenu_/status/884128686764687361 tweet] ||
||2017-07-04 14:00:00 ||2017-07-21 10:00:00 || ||obfs4 ||Outage of default obfs4 bridge [https://metrics.torproject.org/rs.html#details/D9E712E593400635462172121B7DB90B07669F71 dragon]. ||[https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html mailing list post] ||
||2017-07-04 18:00:00 ||2017-07-21 10:00:00 || ||obfs4 ||Outage of default obfs4 bridge [https://metrics.torproject.org/rs.html#details/854173307E33686BBBAC36A3A093BEF320B719D4 frosty]. ||[https://lists.torproject.org/pipermail/tor-project/2017-July/001280.html mailing list post] ||
||2017-08-07 ||ongoing ||cd || ||The Democratic Republic of the Congo orders a block of social media services. ||[https://www.amnesty.org/en/latest/news/2017/08/drc-block-on-social-media-images-an-appalling-attack-on-freedom-of-expression/ article] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-06-01&end=2017-10-01&country=cd relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2017-06-01&end=2017-10-01&country=cd bridge graph] ||
||2017-08-08 || || ||snowflake ||Tor Browser 7.5a4 released, including Snowflake for macOS. ||[https://blog.torproject.org/blog/tor-browser-75a4-released blog post] ||
||2017-08-10 ||2017-08-11 || || ||Outage of the op-hk OnionPerf instance. Reported timeouts on the tor network increased, download speed improved. ||[https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=all&server=public&filesize=50kb torperf graph] [https://metrics.torproject.org/torperf-failures.html?start=2017-07-11&end=2017-10-09&source=all&server=public&filesize=50kb torperf-failures graph] [https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=op-hk&server=public&filesize=50kb op-hk graph] ||
||2017-08-14 ||2017-08-15 || ||bridge ||Outage of the bridge authority [https://metrics.torproject.org/rs.html#details/1D8F3A91C37C5D1C4C19B1AD1D0CFBE8BF72D8E1 Bifroest]. ||[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 mailing list post] [https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2017-08-27 graph] ||
||2017-09-01 ||2017-09-20 || ||obfs4 ||A flood of over 4,000 obfs4 bridges nicknamed "Machiavelli". ||[https://metrics.torproject.org/networksize.html?start=2017-08-01&end=2017-09-30 graph of number of bridges] [https://lists.torproject.org/pipermail/tor-relays/2017-September/012925.html tor-relays post] [https://lists.torproject.org/pipermail/metrics-team/2017-September/000450.html metrics-team thread] [https://twitter.com/nusenu_/status/905580044503969792 tweet] ||
||2017-09-14 20:00:00 ||2017-09-16 22:12:00 || ||bridge ||Outage of the bridge authority [https://metrics.torproject.org/rs.html#details/1D8F3A91C37C5D1C4C19B1AD1D0CFBE8BF72D8E1 Bifroest]. || ||
||2017-09-15 ||2017-09-16 || ||bridge ||The bridge authority was down due to an issue with its offline master key. ||[https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2018-01-01 graph] [https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html mailing list post] ||
||2017-09-15 ||2017-10-12 || || ||Outage of the op-hk OnionPerf instance. Reported timeouts on the tor network increased, download speed improved. ||[https://lists.torproject.org/pipermail/metrics-team/2017-October/000476.html mailing list post] [https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=all&server=public&filesize=50kb torperf graph] [https://metrics.torproject.org/torperf-failures.html?start=2017-07-11&end=2017-10-09&source=all&server=public&filesize=50kb torperf-failures graph] [https://metrics.torproject.org/torperf.html?start=2017-07-01&end=2017-10-09&source=op-hk&server=public&filesize=50kb op-hk graph] ||
||2017-09-20 || ||pr || ||Hurricane Maria hits Puerto Rico. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-01&end=2017-11-09&country=pr&events=off graph] [https://en.wikipedia.org/wiki/Hurricane_Maria#Puerto_Rico_3 wikipedia] ||
||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. ||[https://www.msn.com/en-sg/money/markets/exiled-chinese-billionaire-blasts-kleptocracy-running-china-warns-of-spy-infiltration-in-us/ar-AAsXLvL article on conference] [https://twitter.com/szshu/status/916289656169275392 tweet] [https://twitter.com/paulwang_xz/status/916633633548525568 tweet] [https://twitter.com/iuui/status/916583990085033985 tweet] ||
||2017-10-14 19:30:00 || || ||snowflake ||Activated client IP address statistics on the Snowflake server and standalone proxies. ||[https://bugs.torproject.org/18628#comment:16 comment] ||
||2017-10-18 ||2017-10-24 ||cn || ||19th National Congress of the Communist Party of China. ||[https://en.wikipedia.org/wiki/19th_National_Congress_of_the_Communist_Party_of_China wikipedia] [https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=2067 Psiphon users] ||
||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. ||[https://blog.torproject.org/new-stable-tor-releases-0318-03012-02913-02816-02515 blog post] [https://blog.torproject.org/introducing-bastet-our-new-directory-authority Bastet blog post] [https://bugs.torproject.org/23910 bastet ticket] [https://bugs.torproject.org/23592 Longclaw ticket] ||
||2017-11-01 || ||ru || ||Ban on VPNs and anonymizers takes effect in Russia. ||[https://www.reuters.com/article/us-russia-internet/putin-bans-vpns-to-stop-russians-accessing-prohibited-websites-idUSKBN1AF0QI news article] [http://publication.pravo.gov.ru/Document/View/0001201707300002 law] ||
||2017-11-01 18:10:00 || || ||meek ||Turned off the old meek-amazon CDN endpoint d2zfqthxsdq309.cloudfront.net. ||[https://lists.torproject.org/pipermail/tor-project/2017-November/001555.html mailing list post] ||
||2017-11-11 ||2017-11-12 || || ||Outage of the op-hk OnionPerf instance. ||[https://metrics.torproject.org/torperf.html?start=2017-10-01&end=2017-12-01&source=op-hk&server=public&filesize=50kb op-hk graph] ||
||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. ||[https://blog.torproject.org/tor-browser-7010-released blog post] ||
||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. ||[https://blog.torproject.org/tor-browser-75a8-released blog post] ||
||2017-11-25 ||2017-11-27 ||pk || ||Social media block in Pakistan. ||[https://dailytimes.com.pk/147132/social-media-goes-down-in-pakistan/ article] [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/ NetBlocks data] [https://ooni.torproject.org/post/how-pakistan-blocked-social-media/ OONI/Bytes For All report] ||
||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. ||[https://bugs.torproject.org/24394 ticket] [https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516 blog post] ||
||2017-12-08 ||2017-12-11 || ||bridge ||The bridge authority was down for unknown reasons. ||[https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2018-01-01 graph] [https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html mailing list post] ||
||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. ||[https://blog.torproject.org/tor-browser-7011-released blog post] ||
||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. ||[https://blog.torproject.org/tor-browser-75a9-released blog post] ||
||2017-12-12 20:15:53 ||2018-01-18 02:28:54 || ||meek ||Outage of the [https://metrics.torproject.org/rs.html#details/C20658946DD706A7A2181159A1A04CD838570D04 meek.bamsoftware.com] (unthrottled for public use), [https://metrics.torproject.org/rs.html#details/AA033EEB61601B2B7312D89B62AAA23DC3ED8A34 meek.bamsoftware.com:7443] (former meek-azure, now unused), and [https://metrics.torproject.org/rs.html#details/D36B0328969EC57AB3085A4470882D99A09C0492 gaeuploader.meek.bamsoftware.com] (used by [https://github.com/katherinelitor/GAEuploader GAEuploader]) bridges. || ||
||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. ||[https://lists.torproject.org/pipermail/tor-talk/2017-December/043844.html announcement] [https://bugs.torproject.org/24665 ticket] ||
||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. ||[https://en.wikipedia.org/wiki/2017%E2%80%932018_Iranian_protests#Media_coverage_and_censorship Wikipedia] [https://ooni.torproject.org/post/2018-iran-protests/ OONI report] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-11-01&end=2018-01-20&country=ir relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2017-11-01&end=2018-01-20&country=ir bridge graph] [https://twitter.com/nusenu_/status/948914485045145601 tweet] [https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1770 Psiphon users] ||
||2018-01-01 || ||ae ||relay ||User report that the UAE blocked Tor, bridges work. ||[https://bugs.torproject.org/25137#comment:17 comment] ||
||2018-01-05 ||ongoing || || ||Outage of the op-hk OnionPerf instance. ||[https://metrics.torproject.org/torperf.html?start=2017-12-01&end=2017-02-01&source=op-hk&server=public&filesize=50kb op-hk graph] ||
||2018-01-18 ||2018-02-24 || ||snowflake ||Outage of Snowflake broker caused by the disabling of the Let's Encrypt TLS-SNI-01 challenge. ||[https://bugs.torproject.org/25345 ticket] [https://bugs.torproject.org/30693#comment:3 graph] ||
||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 ||[https://lists.torproject.org/pipermail/tor-relays/2018-February/014478.html tor-relays post] ||
||2018-01-23 20:28:40 || || ||obfs4 ||Tor Browser 7.5 is released. It adds the default obfs4 bridge noisetor01:46089. ||[https://blog.torproject.org/tor-browser-75-released blog post] ||
||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. ||[https://bugs.torproject.org/22346 ticket] [https://lists.torproject.org/pipermail/metrics-team/2018-March/000750.html thread] ||
||2018-02-10 || || ||relay ||Tor 0.3.3.2-alpha is released (containing important denial-of-service migitations for relays) ||[https://blog.torproject.org/tor-0332-alpha-released-bugfixes-and-dos-prevention blog] ||
||2018-02-24 || ||cn || ||Blocking in China intensifies following the announcement of proposed changes to remove presidential term limits. ||[https://chinadigitaltimes.net/2018/02/sensitive-words-emperor-xi-jinping-ascend-throne/ article] ||
||2018-02-27 16:00:00 ||2018-03-02 || || ||Less than 3 bandwidth authorities are available. ||[https://lists.torproject.org/pipermail/tor-relays/2018-February/014676.html tor-relays] ||
||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. ||[https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915 blog post] [https://bugs.torproject.org/24902 ticket] ||
||2018-03-14 16:53:00 || || ||snowflake ||Deployed an attempt to fix frequent crashes of the fallback snowflake proxies. ||[https://bugs.torproject.org/21312#comment:39 comment] [https://gitweb.torproject.org/pluggable-transports/snowflake.git/commit/?id=f2abf5b60c289103d8661b8e54b3d3aee43a4aaf commit] ||
||2018-03-16 04:07:45 || || ||snowflake ||Deployed another attempt to fix frequent crashes of the fallback snowflake proxies. ||[https://bugs.torproject.org/21312#comment:57 comment] ||
||2018-03-22 03:03:45 || || ||snowflake ||Disabled periodic restarts of the fallback snowflake proxies; gave them a memory limit of 200 MB. ||[https://bugs.torproject.org/21312#comment:63 comment] ||
||2018-03-22 03:19:19 || || ||snowflake ||Increased memory limit of the fallback snowflake proxies from 200 MB to 400 MB. ||[https://bugs.torproject.org/21312#comment:63 comment] [https://bugs.torproject.org/25688#comment:1 comment] ||
||2018-03-22 05:16:59 || || ||snowflake ||Provisionally increased memory limits of the fallback snowflake proxies to 400 MB, 800 MB, or unlimited. ||[https://bugs.torproject.org/25688#comment:1 comment] ||
||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`). ||[https://bugs.torproject.org/21312#comment:64 comment] [https://bugs.torproject.org/25688#comment:1 comment] ||
||2018-03-26 20:43:42 || || ||snowflake ||Release of Tor Browser 8.0a5. Improves snowflake client performance. ||[https://blog.torproject.org/tor-browser-80a5-released blog post] [https://bugs.torproject.org/21312 ticket] ||
||2018-03-27 19:26:12 || || ||snowflake ||Restarted the fallback snowflake proxies with no limit on memory. ||[https://bugs.torproject.org/25688#comment:1 comment] ||
||2018-04-02 04:57:42 || || ||snowflake ||Reinstated periodic restarts of the fallback snowflake proxies. ||[https://bugs.torproject.org/25688#comment:1 comment] ||
||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. ||[https://bugs.torproject.org/25688#comment:1 start] [https://bugs.torproject.org/22874#comment:10 end] ||
||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 [https://metrics.torproject.org/rs.html#details/5481936581E23D2D178105D44DB6915AB06BFB7F 5481936581E23D2D178105D44DB6915AB06BFB7F] went to zero. ||[https://bugs.torproject.org/25804 ticket] ||
||2018-04-16 || || ||snowflake ||Moved the Snowflake broker from App Engine to a standalone server. ||[https://bugs.torproject.org/22874#comment:9 comment] ||
||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. ||[https://www.bleepingcomputer.com/news/government/russia-bans-18-million-amazon-and-google-ips-in-attempt-to-block-telegram/ article] [https://metrics.torproject.org/userstats-relay-country.html?start=2018-03-01&end=2018-07-15&country=ru relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2018-03-01&end=2018-07-15&country=ru bridge graph] ||
||2018-04-28 || ||ru || ||Russia unblocks about 3 million IP addresses belonging to Amazon and OVH. ||[http://rkn.gov.ru/news/rsoc/news57288.htm Roskomnadzor press release] [https://usher2.club/en/ monitoring page] ||
||2018-05-08 || ||ru || ||Russia unblocks about 3.7 million IP addresses belonging to Google and Digital Ocean. ||[http://rkn.gov.ru/news/rsoc/news57454.htm Roskomnadzor press release] [https://usher2.club/en/ monitoring page] ||
||2018-05-08 22:01:06 || || ||meek ||The [https://metrics.torproject.org/rs.html#details/F4AD82B2032EDEF6C02C5A529C42CFAFE516564D meek-amazon bridge] imposes a rate limit of 1 MB/s. || ||
||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. ||[https://blog.torproject.org/tor-browser-80a7-released blog post] [https://bugs.torproject.org/26010 ticket] ||
||2018-05-14 || || ||meek ||Disabled the d2cly7j4zqgua7.cloudfront.net CDN endpoint for meek-amazon. ||[https://bugs.torproject.org/26098 Tor Browser ticket] [https://bugs.torproject.org/26111 Orbot ticket] ||
||2018-05-17 || || ||bridge ||Release of tor 0.3.4.1-alpha. Has a bug that makes idle bridges unuseful. ||[https://bugs.torproject.org/28717 ticket] [https://bugs.torproject.org/28912 ticket] ||
||2018-06-09 17:17:09 || || ||meek ||Release of Tor Browser 7.5.5, removes meek-amazon option. ||[https://blog.torproject.org/tor-browser-755-released blog post] ||
||2018-06-10 10:15:04 || || ||meek ||Release of Tor Browser 8.0a8, removes meek-amazon option. ||[https://blog.torproject.org/tor-browser-80a8-released blog post] ||
||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. ||[https://bugs.torproject.org/26807 ticket] [https://lists.torproject.org/pipermail/tor-project/2018-June/001842.html mailing list post] [https://www.accessnow.org/venezuela-blocks-tor/ Access Now report] ||
||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. ||[https://bugs.torproject.org/26783 ticket] ||
||2018-06-27 20:17:18 || || ||meek ||Release of Tor Browser 8.0a9 with non-working meek. ||[https://blog.torproject.org/new-release-tor-browser-80a9 blog post] [https://bugs.torproject.org/26477 ticket] ||
||2018-07-01 ||ongoing ||ug || ||A social media tax takes effect in Uganda. The government pressures ISPs to block VPNs. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-05-01&end=2018-08-01&country=ug&events=off relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2018-05-01&end=2018-08-01&country=ug&events=off bridge graph] [https://www.bbc.com/news/world-africa-44315675 BBC article] [http://allafrica.com/stories/201807040129.html AllAfrica article] [https://ooni.io/post/uganda-social-media-tax/ OONI report] ||
||2018-07-04 07:00:20 ||2018-07-06 05:36:08 || ||snowflake ||Outage of the Snowflake bridge, caused by a full disk. ||[https://bugs.torproject.org/26661 ticket] ||
||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. ||[https://bugs.torproject.org/26711 ticket] [https://bugs.torproject.org/26771 ticket] [https://lists.torproject.org/pipermail/metrics-team/2018-July/000863.html mailing list post] [https://metrics.torproject.org/networksize.html?start=2018-06-01&end=2018-09-01 number of bridges graph] ||
||2018-07-14 ||2018-07-25 ||iq || ||Protests, Internet shutdowns, and social media blocks in Iraq. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-06-01&end=2018-09-01&country=iq relay graph] [https://netblocks.org/reports/study-shows-extent-of-iraq-internet-shutdown-and-social-media-restrictions-during-protests-zPyXjzAE NetBlocks post] [http://www.nrttv.com/EN/News.aspx?id=2810&MapID=1 NRT article about end] [https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1729 Psiphon users] ||
||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 [https://metrics.torproject.org/rs.html#details/BA44A889E64B93FAA2B114E02C2A279A8555C533 Serge]. 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. ||[https://lists.torproject.org/pipermail/tor-relays/2018-July/015681.html announcement] [https://bugs.torproject.org/26771 ticket] [https://blog.torproject.org/new-release-tor-0339-bridge-authority-update blog post] [https://metrics.torproject.org/networksize.html?start=2018-06-01&end=2018-09-01 number of bridges graph] ||
||2018-07-15 16:25:34 || || ||snowflake ||Made the Snowflake bridge report to the new Serge bridge authority. ||[https://bugs.torproject.org/26783#comment:1 comment] ||
||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. ||[https://lists.torproject.org/pipermail/metrics-team/2018-July/000866.html mailing list post] [https://metrics.torproject.org/userstats-bridge-country.html?start=2018-06-01&end=2018-09-01&country=all graph] ||
||2018-07-29 ||2018-08-08 ||bd || ||Protests over road safety in Dhaka, Bangladesh. Reports of mobile network throttling and blocking of Facebook. ||[https://www.nytimes.com/2018/08/05/world/asia/bangladesh-students-protests.html New York Times article] [https://www.thedailystar.net/country/bangladesh-mobile-internet-speed-brought-down-across-for-24hrs-1615909 Daily Star article on throttling] [https://netblocks.org/reports/bangladesh-internet-shutdown-student-protests-jDA37KAW NetBlocks report] ||
||2018-08-04 19:00:00 ||2018-08-05 17:00:00 || || ||Collector was missing consensuses. They were recovered via recent relay consensus diffs. ||[https://lists.torproject.org/pipermail/metrics-team/2018-August/000869.html metrics-team thread] [https://lists.torproject.org/pipermail/tor-relays/2018-August/015850.html tor-relays thread] ||
||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. ||[https://blog.torproject.org/new-release-tor-0348-also-other-stable-updates-02917-03212-and-03310 blog post] ||
||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. ||[https://bugs.torproject.org/28390 ticket] ||
||2018-11-19 ||2018-11-27 || || ||Slow-running processes on the metrics host cause an observed drop in the overall relay bandwidth graph. ||[https://lists.torproject.org/pipermail/metrics-team/2018-December/000971.html mailing list thread] ||
||2018-11-26 ||2018-11-28 || || ||Outage of the onionperf-us instance, caused by a Greenhost east coast VPS migration. ||[https://lists.torproject.org/pipermail/metrics-team/2018-November/000967.html mailing list post] ||
||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. || ||
||2018-12-18 ||2018-12-21 ||ae ||<OR> ||Reported blocking of vanilla Tor in the UAE. ||[https://bugs.torproject.org/27723#comment:16 comment] ||
||2018-12-20 ||ongoing ||sd || ||Protests and social media blocks in Sudan. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-11-15&end=2019-01-15&country=sd&events=off relay graph] [https://www.accessnow.org/amid-countrywide-protest-sudan-shuts-down-social-media-on-mobile-networks/ Access Now post] [https://media.ccc.de/v/35c3-9964-cat_mouse_evading_the_censors_in_2018#t=1670 Psiphon users] ||
||2019-01-07 07:00:00 ||2018-01-08 11:00:00 ||ga || ||Internet shutdown in Gabon following a coup attempt. ||[https://ooni.torproject.org/post/gabon-internet-disruption/ OONI report] [https://netblocks.org/reports/evidence-of-gabon-full-internet-shutdown-coup-attempt-dQ8oo18n NetBlocks report] ||
||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. ||[https://bugs.torproject.org/28717#comment:32 comment] [https://bugs.torproject.org/28912 ticket] [https://blog.torproject.org/new-releases-tor-0357-03410-and-03311 blog post] [https://bugs.torproject.org/29184 ticket] ||
||2019-02-07 23:45:00 || || ||snowflake ||Disabled the 3 proxy-go instances that were pointing at the former broker hosted on App Engine. ||[https://bugs.torproject.org/29308#comment:4 comment] ||
||2019-03-22 06:25:54 ||2019-03-22 18:34:02 || ||snowflake ||Outage of the Snowflake broker, caused by a full disk. ||[https://bugs.torproject.org/29861 ticket] ||
||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. ||[https://bugs.torproject.org/30205 ticket] ||
||2019-04-28 ||2019-04-29 ||bj || ||Social media blocking and Internet blackout during parliamentary elections in Benin. ||[https://ooni.io/post/2019-benin-social-media-blocking/#social-media-blocking OONI report] ||
||2019-04-29 || || || ||Network equipment failure at site of op-ab OnionPerf instance ||[https://metrics.torproject.org/torperf.html?start=2019-04-25&end=2019-05-04&server=public&filesize=50kb performance graph] ||
||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. ||[https://bugs.torproject.org/30636 ticket] [https://bugs.torproject.org/30636#comment:25 comment about end] [https://lists.torproject.org/pipermail/tor-talk/2019-June/045221.html tor-talk thread] [https://www.reddit.com/r/TOR/comments/bw4byr/surge_in_users/ Reddit thread] [https://bugs.torproject.org/30636#comment:30 comment] [https://www.reddit.com/r/TOR/comments/c4lwdj/today_iran_government_blocked_tor_bootsraping_in/ Reddit thread] ||
||2019-05-22 10:18:01 || || ||fte ||Release of Tor Browser 9.0a1, removes support for FTE. ||[https://blog.torproject.org/new-release-tor-browser-90a1 blog post] [https://bugs.torproject.org/30319 ticket] ||
||2019-05-28 || || || ||Failure of network equipment at site of op-ab OnionPerf instance (equipment now replaced) ||[https://metrics.torproject.org/torperf-failures.html?start=2019-05-23&end=2019-06-02&server=public&filesize=50kb onionperf timeouts graph] ||
||2019-06-20 || || ||obfs4 ||A call to set up new obfs4 bridges is posted to the tor-relays mailing list. ||[https://lists.torproject.org/pipermail/tor-relays/2019-June/017419.html mailing list thread] [https://lists.torproject.org/pipermail/tor-relays/2019-July/017477.html thread continues] ||
||2019-06-21 ||ongoing ||mm || ||Internet shutdown in parts of Myanmar. ||[https://reliefweb.int/report/myanmar/myanmar-end-internet-shutdown-rakhine-chin-states report] ||
||2019-06-26 || || ||snowflake ||The Snowflake web browser extension for Firefox is published. ||[https://bugs.torproject.org/30931#comment:10 comment] ||
||2019-07-02 ||2019-08-26 ||ir ||<OR> relay bridge ||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. ||[https://bugs.torproject.org/30636 ticket] [https://bugs.torproject.org/30636#comment:31 comment] [https://bugs.torproject.org/30636#comment:32 comment] ||
||2019-07-03 || || ||snowflake ||The Snowflake web browser extension for Chrome is published. ||[https://bugs.torproject.org/30999#comment:5 comment] ||
||2019-07-18 ||2019-08-07 02:50:00 ||kz || ||The Kazakh ISP KazTelecom does man-in-the-middle of TLS connections. ||[https://github.com/net4people/bbs/issues/6#issuecomment-519131315 Censored Planet report] [https://github.com/net4people/bbs/issues/6#issuecomment-519131315 post about end] ||
||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. ||[https://bugs.torproject.org/31230 ticket] [https://bugs.torproject.org/31200?cversion=0&cnum_hist=3#comment:3 comment noting decrease in proxies] ||
||2019-07-26 || || ||flashproxy snowflake ||Cupcake 2.0 is released, now working with Snowflake rather than flash proxy. ||[https://chrome.google.com/webstore/detail/cupcake/dajjbehmbnbppjkcnpdkaniapgdppdnc Chrome Web Store page] ||
||2019-07-26 || || ||snowflake ||Version 0.0.8 of the Snowflake extension for Firefox is released, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block. ||[https://bugs.torproject.org/31250#comment:6 comment] ||
||2019-07-27 || || ||snowflake ||Version 0.0.7 of the Snowflake extension for Chrome is released, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block. ||[https://bugs.torproject.org/31250#comment:13 comment] ||
||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. ||[https://bugs.torproject.org/31250#comment:16 comment] ||
||2019-08-06 ||2019-08-09 01:00:00 || || ||Experiment to test the accuracy of relays' advertised bandwidth estimation. ||[https://lists.torproject.org/pipermail/tor-relays/2019-July/017535.html description of experiment] [https://lists.torproject.org/pipermail/tor-relays/2019-August/017599.html post announcing start] [https://lists.torproject.org/pipermail/tor-relays/2019-August/017617.html post announcing end] [https://metrics.torproject.org/bandwidth.html?start=2019-07-01&end=2019-09-01 advertised bandwidth graph] [https://metrics.torproject.org/bandwidth-flags.html?start=2019-07-01&end=2019-09-01 relay flags graph] ||
||2019-10-01 || || ||snowflake ||Release of Tor Browser 9.0a7, the first release that has Snowflake for Windows. ||[https://blog.torproject.org/new-release-tor-browser-90a7 blog post] [https://bugs.torproject.org/25483 ticket] ||
||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. ||[https://bugs.torproject.org/32128 ticket] [https://bugs.torproject.org/32231 ticket] ||
||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. ||[https://bugs.torproject.org/32129#comment:5 comment] ||
||2019-11-13 16:47:02 || || ||snowflake ||Restarted the broker with a new proxy–broker protocol. ||[https://bugs.torproject.org/29207#comment:31 comment] ||
||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. ||[https://bugs.torproject.org/29207#comment:32 comment] ||
||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. ||[https://bugs.torproject.org/29207#comment:34 comment] ||
||2019-11-14 21:23:00 || || ||snowflake ipv6 ||Changed DNS to point to the IPv6-enabled Snowflake broker. ||[https://bugs.torproject.org/29258#comment:16 comment] ||
||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. ||[https://bugs.torproject.org/33385#comment:3 comment] ||
||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. ||[https://bugs.torproject.org/33745#comment:12 comment] ||
||2020-05-22 19:51:29 || || ||snowflake ||Release of Tor Browser 9.5a13, the first release with Turbo Tunnel session persistence features for Snowflake. ||[https://blog.torproject.org/new-release-tor-browser-95a13 blog post] [https://bugs.torproject.org/34043 ticket] ||
||2020-06-02 18:09:48 || || ||snowflake ||Release of Tor Browser 10.0a1, the first release with Snowflake for Android. ||[https://blog.torproject.org/new-release-tor-browser-100a1 blog post] [https://bugs.torproject.org/30318 ticket] ||
== Unknown
It looks like something happened, but we don't know what. If you know, fill in the missing details and move it into the table above.
||=start date =||=end date =||=places =||=protocols =||=description =||=links =||
||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. || ||
||2016-02-24 || ||tm ||<OR> ||Large drop in direct users in Turkmenistan. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2015-11-01&end=2016-04-01&country=tm&events=off graph] ||
||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. ||[https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-06-01&end=2017-04-01&country=br graph] ||
||2016-08-18 ||2016-08-29 ||ml || ||Sudden increase of direct and bridge users in Mali. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2016-03-01&end=2016-10-01&country=ml&events=off relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2016-03-01&end=2016-10-01&country=ml&events=off bridge graph] ||
||2016-08-24 || ||cn ||<OR> ||Large decrease in users in China. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2016-07-30&end=2016-10-28&country=cn&events=off relay] [https://metrics.torproject.org/userstats-bridge-country.html?start=2016-07-30&end=2016-10-28&country=cn bridge] ||
||2016-10-09 ||2016-10-25 ||il ||<OR> relay ||Direct users fluctuate wildly in Israel. Bridge users not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2016-07-28&end=2016-10-26&country=il&events=off graph] ||
||2016-11-20 || ||sa ||<OR> ||Decrease in direct users and increase in bridge users in Saudi Arabia. ||[https://bugs.torproject.org/20785 ticket] ||
||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. ||[https://bugs.torproject.org/20785 ticket] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-01-01&end=2017-06-01&country=ae&events=off graph] [https://lists.torproject.org/pipermail/metrics-team/2017-January/000284.html metrics-team thread] [https://www.reddit.com/r/TOR/comments/5pbukk/united_arab_emirates_went_from_10k_tor_users_to/ Reddit thread] [https://bugs.torproject.org/25137#comment:10 comment about botnet] ||
||2017-02-06 ||~2017-08-01 ||ae ||obfs3 ||Increase in obfs3 users from the UAE, from 5K to 100K. Other transports not affected. ||[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 transport graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2017-01-01&end=2017-08-01&country=ae UAE bridge graph] [https://bugs.torproject.org/21345 ticket] ||
||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. ||[https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-11-01&end=2017-07-27&country=jo graph] ||
||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. ||[https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-11-01&end=2017-07-27&country=in graph] ||
||2017-03-01 ||~2018-11-12 ||ae ||<OR> relay ||Another increase in relay users, slower and more sustained than the previous one. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2016-07-01&end=2019-01-01&country=ae&events=off graph] [https://bugs.torproject.org/28898#comment:2 ticket about end] ||
||2017-04-05 ||2017-04-13 ||il ||<OR> relay ||Sudden increase of direct users in Israel. Bridge users not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-23&country=il&events=off relay graph] ||
||2017-04-17 ||2017-04-23 ||il ||<OR> relay ||Another sudden increase of direct users in Israel. Bridge users not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-23&country=il&events=off relay graph] ||
||2017-04-23 || ||tw ||<OR> relay ||Relay users triple and begin to fluctuate in Taiwan. ||[https://lists.torproject.org/pipermail/tor-talk/2017-May/043206.html tor-talk post] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-24&country=tw&events=on graph] ||
||2017-05-09 ||2017-05-12 ||mo ||<OR> relay ||Sudden temporary peak of 3k direct users in Macau. ||[https://lists.torproject.org/pipermail/tor-talk/2017-May/043206.html tor-talk post] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-02-22&end=2017-05-12&country=mo&events=on graph] ||
||2017-05-10 || ||eg ||<OR> relay ||Drop in direct users from Egypt. ||[https://lists.torproject.org/pipermail/tor-talk/2017-May/043206.html tor-talk post] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-03-15&end=2017-06-13&country=eg&events=on graph] ||
||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. ||[https://metrics.torproject.org/userstats-bridge-combined.html?start=2016-06-01&end=2018-01-15&country=br graph] ||
||2017-06-13 || ||ch ||obfs4 ||Increase in obfs4 users in Switzerland, from 200 to 400. ||[https://metrics.torproject.org/userstats-bridge-country.html?start=2017-01-01&end=2017-08-14&country=ch bridge graph] [https://metrics.torproject.org/userstats-bridge-combined.html?start=2017-01-01&end=2017-08-14&country=ch transport graph] ||
||2017-06-14 ||2017-07-06 ||ml || ||Sudden increase of direct and bridge users in Mali. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-03-01&end=2017-09-01&country=ml&events=off relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2017-03-01&end=2017-09-01&country=ml&events=off bridge graph] ||
||2017-07-01 || ||ae ||<OR> relay ||Sudden drop in relay users. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-01-01&end=2017-09-01&country=ae&events=off graph] ||
||2017-07-15 ||2017-07-22 ||sc ||<OR> relay ||Increase of relay users in the Seychelles, from 400 to 6000. Bridge users not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-16&end=2017-08-14&country=sc&events=off relay graph] ||
||2017-07-31 ||2017-08-17 ||at ||<OR> relay ||Fluctuations of relay users in Austria. Bridge users not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-16&end=2017-09-15&country=at&events=off relay graph] ||
||2017-07-31 ||2017-08-28 || || ||Directory authorities using 2× bandwidth. ||[https://lists.torproject.org/pipermail/tor-dev/2017-August/012389.html mailing list post for start] [https://lists.torproject.org/pipermail/tor-dev/2017-September/012445.html mailing list post for end] [https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html post suggesting link to nl, ro, lt, sc increases] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-10-15&country=nl&events=off relay graph] [https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html post suggesting link to 2× dirauth bandwidth] [https://lists.torproject.org/pipermail/metrics-team/2017-August/000428.html post about start] [https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html post about end] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-05-16&end=2017-10-15&country=ro&events=off relay graph] [https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html post suggesting link to 2× dirauth bandwidth] ||
||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 Nethernlands, Romania, and the Seychelles. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-10-15&country=lt&events=off relay graph] [https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html post suggesting link to 2× dirauth bandwidth] [https://lists.torproject.org/pipermail/metrics-team/2017-August/000428.html post about start] [https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html post about end] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-10-15&country=sc&events=off relay graph] [https://lists.torproject.org/pipermail/tor-dev/2017-September/012446.html post suggesting link to 2× dirauth bandwidth] [https://lists.torproject.org/pipermail/metrics-team/2017-August/000428.html post about start] [https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html post about end] ||
||2017-08-14 || || ||ipv6 obfs4 ||Jump in IPv6 users of the [https://metrics.torproject.org/rs.html#details/D9C805C955CB124D188C0D44F271E9BE57DE2109 Lisbeth] default obfs4 bridge. ||[https://bugs.torproject.org/22429#comment:7 comment] ||
||2017-08-15 || ||hk ||<OR> relay ||Triple increase in direct Tor users in Hong Kong. Bridge users not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-06-01&end=2017-08-30&country=hk&events=off relay graph] ||
||2017-08-23 || ||kr ||<OR> relay ||Increase of users in South Korea, relay only. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-06-01&end=2017-12-01&country=kr graph] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-09-15&country=eg&events=off eg graph] [https://metrics.torproject.org/userstats-relay-country.html?start=2017-07-01&end=2017-09-15&country=tr&events=off tr graph] ||
||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. ||[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 graph] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-15&end=2017-12-01&country=de&events=off de graph] [https://www.reddit.com/r/TOR/comments/7b53kq/direct_users_from_germany_go_from_200k_to_500k_in/ Reddit thread] [https://bugs.torproject.org/24669 ticket] ||
||2017-10-07 ||2017-12-20 ||ro ||<OR> relay ||Surge of relay users in Romania, from 10k to around 90k, which later subsided. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-09&end=2018-01-15&country=ro&events=off graph] [https://lists.torproject.org/pipermail/metrics-team/2017-October/000502.html metrics-team thread] ||
||2017-10-30 ||2017-11-06 ||zm ||<OR> relay ||Short-lived tripling of relay users in Zambia. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-08-01&end=2017-12-15&country=zm&events=off graph] ||
||2017-12-10 ||2018-02-01 ||de ||<OR> relay ||Further, slow increase of relay users in Germany, from 500k to over 1.5M. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-11-01&end=2018-01-15&country=de&events=off graph] [https://www.reddit.com/r/TOR/comments/7ldrox/tor_usage_in_germany_what_happend/ Reddit thread] [https://bugs.torproject.org/24669 ticket] ||
||2017-12-12 ||2018-01-10 ||fr ||<OR> relay ||Temporary tripling of relay users in France. Bridges not affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2017-10-01&end=2018-03-01&country=fr&events=off graph] ||
||2017-12-16 ||2017-12-17 || ||bridge ||Drop in the number of measured bridges. ||[https://metrics.torproject.org/networksize.html?start=2017-07-01&end=2018-01-01 graph] [https://lists.torproject.org/pipermail/metrics-team/2018-March/000713.html mailing list post] ||
||2018-02-01 ||2018-02-05 ||ir ||meek ||Drop of meek users in Iran; other transports not affected. ||[https://metrics.torproject.org/userstats-bridge-combined.html?start=2018-01-14&end=2018-03-15&country=ir graph] ||
||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 [https://metrics.torproject.org/torperf.html?start=2017-12-10&end=2018-03-10&source=all&server=onion&filesize=5mb graph]; see this [https://metrics.torproject.org/connbidirect.html graph] as well. More datapoints: DDoS of the network happened [https://lists.torproject.org/pipermail/tor-project/2017-December/001604.html around the time] that saw an increase in the number of relay users in Germany, see entry above or [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 graph] [https://bugs.torproject.org/24669 ticket] ||
||2018-04-25 ||2018-07-02 || ||onion ||The number of v2 onion services increases from 70k to 120k. ||[https://bugs.torproject.org/26081 ticket] ||
||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. ||[https://metrics.torproject.org/userstats-bridge-country.html?start=2018-04-01&end=2018-08-01&country=iq bridge graph] ||
||2018-05-23 ||ongoing || ||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: [https://metrics.torproject.org/userstats-relay-country.html?start=2018-04-01&end=2018-07-01&country=bd Bangladesh] [https://metrics.torproject.org/userstats-relay-country.html?start=2018-04-01&end=2018-07-01&country=cl Chile] [https://metrics.torproject.org/userstats-relay-country.html?start=2018-04-01&end=2018-07-01&country=id Indonesia] [https://metrics.torproject.org/userstats-relay-country.html?start=2018-04-01&end=2018-07-01&country=ma Morocco] [https://metrics.torproject.org/userstats-relay-country.html?start=2018-04-01&end=2018-07-01&country=ve Venezuela]. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-03-01&end=2018-07-01&country=all&events=off relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2018-03-01&end=2018-07-01&country=all bridge graph] ||
||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. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-05-01&end=2018-09-15&country=tr relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2018-05-01&end=2018-09-15&country=tr bridge graph] [https://bugs.torproject.org/21014#comment:19 comment] ||
||2018-07-20 ||2019-05-02 || ||onion ||The number of v2 onion services increases from 70k to 100k. ||[https://bugs.torproject.org/26081#comment:2 comment] ||
||2018-07-28 ||ongoing ||tr ||relay ||Another jump of relay users in Turkey, from 5k to about 30k. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-05-01&end=2018-09-15&country=tr relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2018-05-01&end=2018-09-15&country=tr bridge graph] ||
||2019-02-16 ||ongoing ||by ||relay ||Increase of relay users in Belarus. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2018-07-01&end=2019-06-01&country=by&events=off graph] [https://lists.torproject.org/pipermail/metrics-team/2019-May/001064.html mailing list post] ||
||2019-04-27 ||ongoing ||ru ||relay ||Relay users increase by about 100K, in an apparent weekly cycle. Bridge users are not similarly affected. ||[https://metrics.torproject.org/userstats-relay-country.html?start=2019-03-01&end=2019-06-15&country=ru relay graph] [https://metrics.torproject.org/userstats-bridge-country.html?start=2019-03-01&end=2019-06-15&country=ru bridge graph] [https://lists.torproject.org/pipermail/tor-talk/2019-June/045221.html tor-talk thread] [https://www.reddit.com/r/TOR/comments/bw4byr/surge_in_users/ Reddit thread] ||
||2019-10-03 ||ongoing || cn ||bridge || New default bridge, 193.11.166.194, is already blocked by the GFW – two days after the [https://blog.torproject.org/new-release-tor-browser-90a7 Tor Browser alpha release] that shipped with it. The block may have happened sooner, though. We only tested the bridge just now. || [https://bugs.torproject.org/31164 new default bridge] ||
