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Any good selfhosted instant messaging? (lemmy.zip)

submitted 9 hours ago by N0cT4rtle@lemmy.zip to c/selfhosted@lemmy.world

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Can you guys suggest some reliable and secure selfhosted IM service? I'm kinda in a very bad spot right now, so any centralized messaging wouldn't really work. And yeah, state sponsored mass surveillance is a question of concern. Sorry for odd phrasing, just really at a loss.

I heard of matrix, XMPP (heard good things about snikket.org), SimpleX and even some IRC wizardry over TOR. And I actually tried matrix (synapse server), but found it not reliable enough - sometimes skips a notification, periodic troubles with logging in, weird lack of voice calls on mobile client, and some other irritating, tiny hiccups. I'm open to any suggestion, really, even open to trying matrix once again. Just, please, describe why you think one option is better than the other.

And just FYI, use case is simply texting with friends and family, while avoiding state monitoring. Nothing nefarious

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[–] irotsoma@piefed.blahaj.zone 0 points 3 hours ago (1 children)

It's unlikely encryption would be compromised since the keys never leave the device. The user's device would have to be compromised for that. Decrypting messages on Signal servers without the keys takes too many resources to be feasible en masse, even for a state actor. And the current app has no method to transfer those private/decryption keys.

But Signal is not private. It is only secure. Two totally different things. A bad actor could uniquely identify a user and what users they have communicated with and how often, just not the content of the messages. That metadata is stored on the Signal servers and the company has access. That is the tradeoff for ease of use and keeping malicious accounts to a minimum vs an anonymous IM app.

[–] non_burglar@lemmy.world 2 points 1 hour ago (1 children)

Op specifically asked about a self-hosted option. I think it was fair to comment that Signal wouldn't satisfy this requirement.

[–] irotsoma@piefed.blahaj.zone 1 points 5 minutes ago

Right, which is why I didn't reply to op. I replied to a threaded comment that stated that Signal e2ee could be compromised by a compromised server, which is incorrect. Only privacy could be compromised, not e2ee. The specific threaded comment I replied to didn't mention that it didn't satisfy OP, which I also agree with.