So how do I find out if someone is hacking my computer or network? I have been having problems with downloading files and once in awhile firefox will act weird. As in, I click on anything, even refresh it wont do anything, no error no nothing. Then once clicking a million times it will load, oh wait then it wont. It's very weird and for reasons that are too hard to explain I know it's not Firefox itself, and its not the downloaded files themselves. All I want to know is, how can I find out if someone is in my network or computer, and how do I get rid of them.