An IT technician downloaded software on my computer at work. After he left, I noticed my desktop was being shared with him. When I asked why, he said he was not aware of this, that it must have happened when he logged in on my computer because he has administrator rights. When I went to remove him from my desktop, I couldn't because he shared my whole Windows profile. He removed the sharing, but I want to know, is it true? Could it have happened automatically?