So it tells you, that you generate atoms. There is somewhere list_to_atom/1
which is called with variable argument. Because you have process with this sort of name, you register/2
processes with this name. It is may be your code or some third party module what you use. It's bad behavior. Don't do that and don't use modules which is doing it.
To be honest, I can imagine design where I would do it intentionally but it is very special case and it is obviously not the case when you ask this question.