Someone made a compilation of academic reviews and blogposts here: https://community.signalusers.org/t/wiki-overview-of-third-party-security-audits/13243 but none of them seem to be real security audit reports, ex. compare with real security audits to Delta Chat: https://delta.chat/en/help#security-audits
yet the reason that “Signal is expensive” https://signal.org/blog/signal-is-expensive/ is because they didn’t go for a federated approach, they spend more money just to keep the servers running than resources spent on development
Not to mention the SMS bills
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