I have a laptop with Windows 10, and Norton 360, and Malwarebytes. I wish I could tell you more, but all I know so far is that a little box pops up in the lower right corner of Desktop about once a day with what looks like little ads. If I click on it all it does is disappear. I forget now what they all said. As I learn or figure out more, I'll keep you posted here (for whoever is interested). Many thanks.