If an attacker decrypts one of your message, they can decrypt all your messages if you don't have Perfect Forward Secrecy so it's very important. With PFS, if the attacker decrypts one message, only this one will be decrypted

[–] ErenOnizuka@lemmy.dbzer0.com 2 points 1 day ago* (last edited 1 day ago) (1 children)

Thank you! Signal does have PFS, right?

https://signal.org/blog/asynchronous-security/

[–] saejima@ani.social 1 points 2 hours ago* (last edited 2 hours ago)

Yes, the Signal protocol uses the Double Ratchet algorithm to provide PFS. Over all it is the best messenger app there is currently in terms of privacy -> https://soatok.blog/2024/07/31/what-does-it-mean-to-be-a-signal-competitor/

Even if Signal cannot access anything you share on it, it has major flaws for me:

hosted in the USA on AWS, enemies of international laws
is not decentralised
a phone number must be linked to your account

By the way my nickname is Saejima, a friend of Onizuka and Danma lol 😂