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.

Malicious software, or malware, can wreak havoc on a small business. Some viruses can obtain sensitive data from unsecured workstations, while other infections, like worms, can slow computer or ...

Problem: You think your PC has the flu. It's suddenly sluggish, and unknown toolbars and pop-ups have started appearing everywhere. Microsoft Safety Scanner to the ...

Not all viruses affect computer systems in the same way, but there are several warning signs to look out for including: In some situations, a PC virus won't cause any noticeable changes to your system ...

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 ...

Michael Gersten wants to be absolutely sure malware can’t interfere with his security scan. No matter how good your security software, and how well you keep it up to date, there’s always that nagging ...

Many rogue software disguised as virus/malware scanners get downloaded to your PC, knowingly or unknowingly. However, when tested for their utility, they are found to be far from satisfactory.

Discovering that a virus has infected your systems is never a pleasant experience. Some malware programs are easy to remove, and require only a few minutes to clean your servers and restore normal ...

You work hard to protect your PC from the malicious thugs of our digital world. You keep your antivirus program up to date. You avoid questionable Web sites. You don ...