Had a Gateway years ago that came with Norton. It was a pain and as others have said impossible to completely remove from the computer. Had McAfee on a succession of computer. It was provided by my employer since I had remote access to their network. It required to many resources and really didn't run in the background. After I retired, I continued a subscription since it was easy. Did get hit with a couple of virus. We bought a new computer last year for the with and bought a three computer subscription for Kaspersky. It truly runs in the background and you only know it is there when you need it. I just renewed for next year.