[bad_user]

That's nonsense. In-house proprietary encryption is not peer reviewed and untrustworthy by definition and if you're going to work in the open, especially for a new proprietary chat app, it makes better sense to build on an open platform that's already proven and is handled by people that really know their stuff. More secure and probably cheaper as well.

[nxzero]

Being open source or closed source doesn't make code more secure. What make code more secure is making it more secure. Have you audited the code?

[hobarrera]

Open vs closed sources makes a difference in how much I TRUST its security level, not security itself.

[qutebird]

It is possible for anyone to audit open source software though, unlike proprietary software.