3 ms·

At this point, it feels like Windows AV software makes a machine run far worse than would an actual virus.

• com2kid 13y ago
  Windows Defender is pretty damn good, try it out. The performance overhead is pretty minimal and it is generally well behaved.
  • yuhong 13y ago
    Or MSE for pre-Win8 users. (Windows Defender only protects against spyware in pre-Win8)