I have been doing business with someone on Fiverr. The person's help was really good, but I have concerns that they could potentially hack through TeamViewer. I never leave sight of my PC and I follow every click that is made with the mouse.
However, is there a way that someone can hack without my knowledge? Is there a way for them to control my mouse on their end and make it appear as if my mouse pointer isn't moving on my end?
I make sure to completely log off and lock my PC after each session, however I am not sure how to check if my PC has been hacked without my knowledge.