Vitor Pamplona on Nostr: Signal started by not allowing anyone to export it. That was forward secrecy. But ...

Signal started by not allowing anyone to export it. That was forward secrecy. But when they added the import/export and desktop clients, forward secrecy became irrelevant because all an attacked needs to do is to attack the import feature. They don't need to decrypt individual messages anymore. It's just way easier to attack the "seed"

Also Signal is terrible because their servers know everything. It's not private at all. The server can pinpoint anyone, geolocate and uniquely identify all of a user's messages.

If a protocol doesn't operate with multiple servers chosen by the user, privacy is pretty much gone. Regardless of the quality of underlying protocol.