Open source and audited are not the same thing. Even audits miss things. Obfuscated code is an issue also.
Someone interested should do a packet capture to start. For me, it isn't worth the risk chat apps that look less sketchy are easy to find.
Discussion
It's all available to be audited. An audit will most likely notice obfuscated code.
Packet capture doesn't help if the data is encrypted, even with just SSL/TLS.
I like Briar, but it's not really useful for public communication in a grid down event like Bitchat or Meshtastic are. What else is there for that?
