On Tuesday 24 May 2016 18:05:19 Moritz Bartl wrote:
In theory, Signal (and Whatsapp) could well use Tor to connect to its servers and provide some metadata protection too...
That wouldn't help as the users could still be easily identified by their phone numbers. The server knows who talks to who how much.
Even if you use XMPP via Tor, the servers still know which JID talks to which JID how much. Logging in to your XMPP account once without Tor potentially compromises your identity to the XMPP server.
Kind Regards, Torsten