Surely you should have the answers before exposing sensitive devices to the outside world?

Not trying to be mean but if you don’t understand what’s happening and why then how can you guard against it?

Everybody gets probed, that is normal. Make it difficult by taking basic precautions and they will move on to easier targets. There’s so many people that don’t do anything and leave themselves wide open. This is what they’re looking for in most cases. Exceptions do include people you might have upset and specifically want access to yours.

Do some homework, secure / segregate your stuff and move on :)