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How to share confidential information?
(lemmy.ml)
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this post was submitted on 21 Sep 2021
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Which of Signals privacy claims are false?
Pretty much everything about it is unverifiable, because its a centralized service and you ultimately don't know what the server is running. Contrast that with self-hostable apps which must pass verifiability checks, because people can host their own instance.
This is suspicion on the level of "you can't be sure reality didn't just pop into existence 10 seconds ago". You can never be 100% sure of what others are doing on their hardware, or of anything really, especially if other people are involved. Your chat partners could leak all your chats and metadata for all you know!
What we do know is that Signal is operated by a non-profit foundation, their client and protocol are open source and considered the gold standard for privacy by pretty much every expert on the subject, they had multiple independent audits and a very good track record, they were subpoenaed and couldn't comply because they didn't have the requested data. That's about as good as you can get.
Clients are open source. Independent clients exists and they work. So the server must kind of do what signal claims, otherwise those devs would notice.
You have no idea what the server is running. It has your phone number, ie your real name and address, and it knows who you sent messages to.