Someone I know said he had put spyware on my computer. Is he talking crap? I've been using Ubuntu 12.04 for nearly 3 years now and I've never seen any type of spyware, remote keyloggers or RATS (remote access tools) and likewise, backdoors. I've searched several Ubuntu forums and nothing. Other than that Amazon thing. If they even exist, are there antivirus scanners to find, identify and remove them?