I have been around for years a Norton antivirus software in various versions. The Norton 360 has some useful additions which I cherish. In tests although there is always a better virus scanner, mainly because the new updates for Norton "" be "made" very late "" are available. I also tested the best test. I am using the Norton so far the most satisfied. He works for me most effective, yet the operating speed of the PC is not slowed down and I do not get permanently displayed to confirmatory messages.