Not sure if it's just me but I'm getting bombarded with virus

screenshot?

Well....Don't have one at the moment, and quite frankly hope I don't ever get it again. The instant I see it I close out of it.
I did just change a setting in my security, hopefully that will work for me. Like I said this is the first time I've been able to be on the site for a long time.

Went to Security in settings and turned Unkwown Sources off. Seems to be holding up so far.