Ken, if you are running Windows 10, the built-in Windows Defender is probably all you need. Having said that, I have been using Super Antispyware for about six years. Back then, I picked up a virus and nothing I tried would remove it. A local computer store installed SaS and that got rid of it. The program doesn’t slow down the computer so I leave it on there and run a scan now and then. It is a free download.