this post was submitted on 08 May 2025
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149
WhatsApp provides no cryptographic management for group messages (arstechnica.com)
submitted 12 hours ago by themachinestops@lemmy.dbzer0.com to c/technology@lemmy.world
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[–] ouch@lemmy.world 36 points 10 hours ago (11 children)

If you want your group memberships to be known only by the group members, use Signal.

[–] Bahnd@lemmy.world 1 points 10 hours ago (4 children)

Or Matrix (warning some assembly required)

[–] new_guy@lemmy.world 11 points 10 hours ago (2 children)

WhatsApp isn’t the only messenger lacking cryptographic assurances for new group members. In 2022, a team that included some of the same researchers that analyzed WhatsApp found that Matrix—an open source and proprietary platform for chat and collaboration clients and servers—also provided no cryptographic means for ensuring only authorized members join a group. The Telegram messenger, meanwhile, offers no end-to-end encryption for group messages, making the app among the weakest for ensuring the confidentiality of group messages.

[–] coconut@programming.dev 1 points 7 hours ago

an open source and proprietary platform

Are parts of matrix closed source?

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