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

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 ...

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 ...

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 ...

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, ...

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 ...

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 ...

When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...

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

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 ...

Best Antivirus Best Antivirus Software for Windows PCs in 2026 Discover the highest ranked antivirus programs for Windows 10 and 11. See whether you need to save or splurge to protect your device, ...