No- for sure. But if that's the last argument someone can put forth about trusting Signal, that's pretty damn good. Most privacy/security investigations end by

No- for sure. But if that's the last argument someone can put forth about trusting Signal, that's pretty damn good. Most privacy/security investigations end by the second paragraph of a EULA where the service tells you that they farm and track every bit of information possible and sell it to third parties before the electrons/photons finish passing through their network cable. And I'm fairly sure that's not what the poster above me actually meant, anyway. When you say "it's not open", do you really think they're saying that in the context of not knowing that the source code we can see is the code that's actually running on the server? If that's what they actually meant, then why would they say that at all, since literally no third-party service is "open" by that definition? They clearly are under a misconception that Signal is closed source or that the protocol is secret or something. They're probably thinking of Telegram, which IIRC, is not open.