Signal knows who you’re talking to – Sane Security Guy (sanesecurityguy.com)

submitted 2 months ago by clot27@lemmy.zip to c/privacy@lemmy.ml

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[-] Cooper8@feddit.online 2 points 2 months ago

Does Delta Chat / Arcane Chat suffer from the same vulnerability?

https://arcanechat.me https://delta.chat/en/

[-] QuestionMark@lemmy.ml 4 points 2 months ago

From https://delta.chat/en/help#sealedsender

Does Delta Chat support “Sealed Sender”?

No, not yet.

The Signal messenger introduced “Sealed Sender” in 2018 to keep their server infrastructure ignorant of who is sending a message to a set of recipients. It is particularly important because the Signal server knows the mobile number of each account, which is usually associated with a passport identity.

Even if chatmail relays do not ask for any private data (including no phone numbers), it might still be worthwhile to protect relational metadata between addresses. We don’t foresee bigger problems in using random throw-away addresses for sealed sending but an implementation has not been agreed as a priority yet.

[-] Cooper8@feddit.online 1 points 2 months ago

Thanks, that is very clear

this post was submitted on 23 Nov 2025

29 points (65.6% liked)

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