Microsoft Defender isn't bad, but it's not enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free antivirus apps we've tested.

When choosing the best antivirus software for your device, its important to know how to use it - otherwise you could be paying for a service that isn't actually protecting anything. Running a virus ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. Avira is a cybersecurity company known for its freemium ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. Malwarebytes has long been known for its ability to find and ...

Do you suspect your computer might be infected with a virus? It might show obvious signs like sudden slowdowns or endless pop-ups, or it might silently spy on you in the background. While your first ...