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.

Realizing that your computer is infected with a virus can be a heart-stopping moment, but there's no need to panic. Viruses or other malware can have a devastating effect on your PC, slowing its ...

Computer viruses can invade your system without you noticing, disrupting its operation and even stealing your data. To protect your device, it's important to know how to recognize signs of infection, ...

ZDNET tested the best antivirus software on the market, with support for multiple operating systems, VPNs, and robust protection.

Antivirus software is necessary to install on a computer as it offers protection against several threats that can harm a computer. Windows 11/10 computers come with a built-in free antivirus software, ...

Every device you use is under attack. And malware isn’t just a prank that slows down your PC anymore — it’s big business. Modern malware is the domain of organized crime, from ransomware that holds ...

Even signed, virus-free programs can secretly hack your computer through a tactic called DLL hijacking. Hackers slip in ...

Both Avast One Basic and AVG AntiVirus Free provide excellent antivirus and security protection at absolutely no cost. Is one better than the other? I compare their most important capabilities and ...

If a ransom note suddenly appears on your PC screen, your PC has been hacked. But computer attacks are not always so drastic and clear-cut. For the less obvious cases, you’ll need a finer sense and ...

Dianna Gunn built her first WordPress website in 2008. Since then, she's poured thousands of hours into understanding how websites and online businesses work. She's shared what she's learned on blogs ...