I use Microsoft's own "Windows Defender" combined with Malware Bytes to catch any PUPs. While I'm a very careful user, this combination, to the best of my know

I use Microsoft's own "Windows Defender" combined with Malware Bytes to catch any PUPs. While I'm a very careful user, this combination, to the best of my knowledge, has kept me safe. (MalwareBytes caught a piece of commercial software that I paid $59 for -- a Blu-Ray player -- that tried to install a browser add-on that would have presented alternate advertising.)