tor logs data that it should not
[warn] Invalid hostname www.abcdefghijklmnop.onion; rejecting
Onion hostnames being accessed are confidential information. Tor should never log details of what's going through it to disk by default, even on error. All data like this should be masked unless debugging is enabled explicitly. This is a major breach of reasonable expectations.
[Automatically added by flyspray2trac: Operating System: All]