Originally Posted by Dubdub
I think all viruses and trojans, et al, get to your PC by some sort of user disconnect. They don't get there totally by themselves.
I think it may be more correct to say most do; but plenty of windows user get their PC infected even when doing everything they are supposed to do. Don't know about newer windows, but winxp and earlier, certainly. There are things users can do (sandboxes and so forth), but those solutions are so far separated from out-of-the-box secure it isn't funny.