>>21381026 (lb)
>but looking for a solution
Using signal since before Q
It is safe enough to use
Everything is comped at some level.
Best safe comms probably secure email (proton etc)/face to face, however…
back in the day when we did IT security risk assessments used a point to point chat with no server that was over encrypted tunnel
Not a recommendation, just examples:
P2PSC is a simple command-line chat application that's based on sockets and doesn't rely on a main server or backend.
https://p2psc.js.org/
^^^^^
For something like that it is a direct peer to peer chat with no server, risk of man in the middle might be there (haven't researched it) and someone with a sniffer (like wireshark) could intercept unless it is uses encryption
Depending on how many you need to talk to something simple like this might be a good option