How do you mean? At work our IT guys can take over our computers to resolve issues - do you mean accessing your files, or actually sending emails from it, etc?
Mark on FB, it would be a cold cold day in hell ha ha. Bricro, I'm not sure about on PC's but my mac using it's built in firewall settings logs all traffic, whatever network i am connected to. It's called stealth mode, I'm sure PC's will have something similar.
Is it your own personal PC?, if so they would have had to set up a remote login, and know passwords for your PC etc
I kept getting a message " you have been disconnected from chat because you are logged in from another computer or device"
Sorry to be so computer illiterate. I have now changed my password and so far it seems to have done the trick.