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.

ZDNET experts put every product through rigorous testing and research to curate the best options for you. If you buy through our links, we may earn a commission. Learn Our Process 'ZDNET Recommends': ...

TSA PreCheck offers faster screening at airports nationwide, including Phoenix Sky Harbor Airport. How it works and how to enroll.

We may receive a commission on purchases made from links. Today more than ever, it is of the utmost importance that you have one or more security apps protecting your computer's sensitive inner ...