Learn how to open and configure Windows Defender settings in Windows 11 to protect your PC from viruses and online threats.

A computer virus is a type of malware that can replicate itself on your computer and spread to other devices.

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 ...

Malware includes viruses, worms, adware, spyware, and ransomware — they all work differently but tend to cause similar ...

Windows 11 version 23H2 will stop getting security updates on November 11, 2025. If you’re still running this version, ...

Microsoft has invested heavily in increasing the security of Windows. The firewall, the automatically activated antivirus program, various security functions for protection against boot viruses and ...

It's important to know the signs of a virus, so that you can act quickly to get rid of any malware and stay safe in future. A virus is a type of malicious software, or malware, that can replicate ...

Ransomware is nasty stuff. This type of malware encrypts files on your PC so that you can’t access them—unless you pay the attacker to unlock the data. In other words, your files are held hostage ...

You’ve heard the term, but what does it actually mean? Learn from our expert how these self-replicating programs sneak in, spread, and slow your system down, plus what you need to know to stay ahead.

An ever-present misconception of MacBooks (and other Apple products) is that they're not susceptible to viruses, which is still not universally true.

Your computer has been acting strange lately — running slower than usual, showing weird pop-ups, or behaving in ways that make you suspicious something isn’t right. These could be signs that malware, ...