If your default browser homepage and search engine keep mysteriously changing to Yahoo!, your computer is probably infected ...

When your search engine keeps changing to Yahoo, it's most likely a virus, and you can fix it by resetting your browser. Here's how.

No matter what you've heard, Macs get viruses too. There are a handful of indicators that your Mac may be infected by malware: your computer running slower or working harder than usual (or overheating ...