Hi, What are the best ways to identify any malware/trojan horses on my Mac Yosemite os 10.10.5? Why would adobe flash installer randomly open in my dock and then disappear? I am very concerned my computer is being monitored or in danger of some kind of hijacking threat. Symptoms I am concerned about: mouse going into pinwheel and unusable for minutes at a time. typing text is lagging adobe flash player installer opened twice without my consent or allowance foreign computer mouse showed up on a computer program and was interacting with my program and then disappeared from my screen leaving whatever they were doing to disappear (I have since disabled sharing and remote connectedness to my computer, it has sped up since, but I am concerned). [added in edit: i was also running avg cleaner regulary to dump files just make the computer usable again and clearing my browser's caches as well. The computer memory has taken up 222.05 GB out of 249.2 GB (is that to much memory being used or is it fine?] This is a privately owned computer and I don't network it with any other computer or any one else. If there is anything I might have left out that would be helpful to know for this please let me know. I appreciate any help.