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

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.

10 open-source apps I recommend every Windows user download - for free ...

Follow my expert advice to make your Windows 11 PC faster, regardless of its age or specs, without compromising the appearance and functionality of the OS.

Windows 11 is adding Baseline Security Mode to block unsigned apps, services, and drivers by default, plus new consent prompts for sensitive access and bundled installs, with exceptions when needed ...

In June 2025, Microsoft announced that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems ...

Last year, several dangerous security vulnerabilities were found in the popular 7zip compression tool that were closed with new versions. However, these patches had to be downloaded and installed ...