

I started unplugging the Ethernet cable when I leave for work so IT can’t do any behind the scenes when I’m away.
It’s not your computer, why do you care?
All that’s going to do is make you an annoyance and potentially end up with you being called into a special meeting.
Well, that’s your own fault and poor opsec. That’s also a likely breach of your employer’s acceptable use policy in using their equipment for your personal things.
I know you’re going to say “They don’t care” and that’s probably true - right up until the point when they suddenly do care, or are looking for reasons. It doesn’t matter if your IT are in-house or a MSP, they’re still paid by your employers and so answer to them.