Microsoft Defender isn't enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free ...

Discover Avast’s free version. Get full details on its key features, how it protects your device, how to safely install it, ...

Firewalls scan data sent to your computer for malware and attempt to block files or other data they deem suspicious. Like ...

In 2025, most devices feature built-in antivirus software that scans files you attempt to download, blocking anything it deems suspicious. Antivirus tools also perform automated scans to remove ...

Every time I've had the pleasure of troubleshooting a slow computer, I've discovered that viruses were sapping the PC's performance—and that's included my own. However, you don't have to start pricing ...

PCWorld highlights three superior antivirus alternatives to PC free trials: Windows Security, free options like Bitdefender and Avast One, and comprehensive paid suites like Norton 360 Deluxe. Free ...

Free antivirus apps can protect your PC from common threats—but paid software often adds stronger defenses, extra tools, and peace of mind. I'm here to walk you through the differences. When the IBM ...

Protect your computer with effective antivirus protection and smart computer security strategies to prevent hacking, malware, and viruses for safer online experiences. Pixabay, TheDigitalArtist ...

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 ...

Marshall Gunnell is a Tokyo-based tech journalist and editor with over a decade of experience covering IT, cybersecurity and data storage. Alongside CNET, his work has appeared in ZDNET, Business ...

Keep your computer and other devices safe from viruses and other harmful software with these top-rated antivirus programs.