I'll be the downer here and point out that Tox (both the specification and the c-toxcore implementation) have never undergone a security evaluation, and there are well-understood weaknesses in its security model right now[1].
If you feel inclined to use Tox at all, you should do so as a curiosity only.
If you feel inclined to use Tox at all, you should do so as a curiosity only.
[1]: https://github.com/TokTok/c-toxcore/issues/426