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.

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 ...

Both Avast and Bitdefender originally built their reputations on their high-quality, free solutions. Even though they've both grown into professional-grade security companies, they still offer ...

A finger pressing a key with antivirus inscription on a keyboard - Diy13/Getty Images With the ever-growing threat of malware, ransomware, and phishing scams, a solid security app is essential for any ...

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 ...

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 ...

You get what you pay for. That’s what they always say, right? And while that can be true for many things, antivirus software is a little different. There are reputable free antivirus solutions out ...

Many Mac users wonder if they need extra antivirus software. The answer depends on what you use your Mac for and where you’re using it from. The macOS operating system is tightly controlled and uses ...

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 ...

Over 300,000 new types of ransomware and other malicious software are discovered daily, according to the IT security research institute AV-TEST. Computer viruses can slow your devices, create a slew ...