So I left grad school about 3 years ago. I had some sort of breakdown and decided to leave. Well, a lot of strange things happened and I got really paranoid. One example is whenever I would search for something on my computer a postdoc would repeat it to someone else and I heard it. I suspected he installed a keylogger on my computer, which is definitely an invasion of my privacy. Also, one of the grad students came in and said "he installed a keylogger on his computer and doesn't want to admit it." I don't know who 'he' refers to, but I assume it is the postdoc, and 'his' I assume refers to me. Is this legal? I can't find anything that says it is. I even found a keylogger on my computer several months after I left school. I used a KL detector.