TeamSpeak has reported a vulnerability in it's client that can potentially lead to RCE. A new version has been released that fixes it. So please update the client in your bot installation as soon as possible as well. Click here for more information.
If you need help or want to discuss things, you now can also join us on our Discord Server!
Yes, that's possible. The bot knows about several privileges that a user must have to do several kinds of actions. To make the bot recognize a TS user as a bot user, you can bind a TS account to a bot account on the Edit user page.
All available commands are listed at Settings -> Info -> Commands - including the required privileges to run them.