this post was submitted on 02 Mar 2021
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Privacy
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Another big problem with Signal is the fact that it's centralized with the server being located in US. Even if the protocol itself is secure with the server not having access user data, this presents a huge risk since US government can simply force Signal to shut down the service at any time. The server can also potentially collect metadata about the users providing US security agencies with user connection graphs.
I think that Matrix approach is much more sound, and would always recommend it over Signal.
I wrote about both issues, and why Matrix isn't a perfect solution, previously: part 1, part 2. Starring WhatsApp, Firefox, Signal, XMPP, Email, and Matrix.
Also discussed on Lemmy: part 1, part 2.
Signal's problem is being a closed platform; Matrix suffers primarily from complexity. Both enable dependence on a single small group, and therefore enable user domestication. That being said, Matrix is considerably less bad than Signal.
For large public rooms, IRC continues to be the best option. All its issues are client-side; IRCv3 supports history, multiple devices, authentication without NickServ, and even typing notifications. All these features are supported on Oragono. For small, private E2EE rooms, all existing solutions have major trade-offs.