element/matrix e2e encryption has had a rocky past with many holes. they do have more active rooms though. just don't trust that any of them are secure or e2e enabled.

i remember earlier this year notifying the admins when someone took over the element chat (with admin privileges) and started randomly calling like 15k members in the room as well as clitching the feed. it was a live hack.

tl,dr: i treat it like a public support blog or forum that i don't expect to be secure.

i was an early adopter of SimpleX, since december 2022 and i have had multiple chats with the developer, Evgeny.

SimpleX privacy & security is absolutely brilliant. it's still beta but it's growing...fast. the amount of rooms are growing and it is the best imo for private and/or anonymous conversations.

i have always seen it as a Signal killer that could very well be a matrix killer as well.

hope this helps 🤙🏻💜

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Oh yeah I use Element for public groups, I don't expect privacy. Same as Telegram. Lots of good groups and channels but never expect it to be private.

Since SimpleX is still a bit hit and miss with groups (I've tried to setup a few recently and it's still very buggy) what do you use there if you want privacy?

Signal is solid but obviously requires a phone number. Session is mostly reliable these days but there's questionable choices made in design like forking Signal and removing forward secrecy.

Wickr was actually pretty decent but the consumer version is now R.I.P.

What about good old school XMPP? Self-hostable, interoperable between servers, battle tested. Still a lot of active development, Conversations on Android is a great client, and the OMEMO E2EE (based on the Signal Protocol) is pretty solid iirc.

*typo. not 15k, 45k 😅