Think twice before you click on that link—even if it was sent to you by a friend or family member. Simply put, a computer virus is a program that you did not install which often performs malicious ...

Add Yahoo as a preferred source to see more of our stories on Google. Q: I have a problem with a pop-up that keeps appearing on the lower right-hand side of my Desktop screen. It appears every time I ...

The word 'virus' gets tossed around a lot. Here's what actually counts, what to watch for, and how to stay two clicks ahead ...