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WhatsApp provides no cryptographic management for group messages
(arstechnica.com)
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this post was submitted on 08 May 2025
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If you want your group memberships to be known only by the group members, use Signal.
Just be sure to add only the people you want to be there. I've heard some people add others and it's a bit messy
How bad can it be, it's not like we're sharing state secrets
We're clean on OpSec
Or https://simplex.chat/ where there are no identifiers like phone numbers or any other identifier.
Security review was done by trail of bits.
Or P2P stuff like Briar :)
Or Matrix (warning some assembly required)
That study was 3 years ago, features to create private (invite only) group chats are supported now.
How can matrix be insecure when it keeps locking me out of my own messages?
Are parts of matrix closed source?
I actually found xmpp to be a breeze compared to most Matrix solutions.
Synapse is bloated, dendrite sucks and conduit is in perpetual beta and the uwu forks die too fast.
XMPP:
Just use signal is not a valid statement in a world where vast majority of people aren't using (and won't use) it. I have been trying to get people to install it and have a total of 6 over several years. They only use it to communicate with me.