So there's a basic slash command (/msg) that allows users to message anyone in the server regardless of mutual channel access. Basic slash command permissions are controlled by channels, not roles.
I can turn off slash commands for the category, but tickets aren't synced with the category due to requiring access for the ticket creator.
This has created a situation where unverified users can access and message my members despite not being visible to each other. As we're a vulnerable community that's targeted by trolls and scammers, this is a serious concern for us.
I'm not sure if there's anything that can be done about this, but I figured I'd bring it up, just in case.