Signal is making a part of their server source code proprietary software:
"To keep Signal a free global communication service without spam, we must depart from our totally-open posture and develop one piece of the server in private".
Taking into account it's centralized nature and that they don't allow third party clients, Signal seems to be just as bad as other "privacy" oriented companies.
Leave Signal and join a truly private, decentralized and libre protocol like #XMPP
or matrix, it has great encryption algorithms.
That's false: https://fosstodon.org/web/statuses/106959111512508218
Also if the operators of matrix.org were subpoenaed like #signal has been they would have access to the social graph of all their users.
Matrix also encourages the use of a Web client which completely undermines the E2EE.
@twotwenty @werwolf
I criticize matrix but that doesn't mean that I hate it. The basic idea behind matrix is really great, but the execution is the issue. Security-wise Signal is simply way ahead of what matrix can do, but if matrix had been designed from the start to be as secure as Signal is would have been possible.
But matrix is still much better than most proprietary messengers, and even if Matrix's security is lacking compared to Signal, messages are still E2EE.