The human mind loves to categorize things, and malware is no exception. We here at CSO have done our part: our malware explainer breaks down malware based on how it spreads (self-propagating worms, ...

Discover the types of malware in 2025, from backdoors to ransomware, and learn which families hackers use most in real-world attacks.

A virus, worm, and Trojan are three types of malware that can be dangerous to devices and data. While a virus replicates itself through legitimate files, a worm exploits security vulnerabilities to ...

There’s lots of information (and misinformation) about the term “virus,” so let’s get it straight and define computer virus once and for all: a computer virus is a self-replicating, malicious program ...

A new strain of computer virus that infects digital photographs has been spotted, with the potential to wreak havoc on the Internet, experts warned on Thursday. The new virus, labelled Perrun, infects ...

A new strain of computer virus that infects digital photographs has been spotted, with the potential to wreak havoc on the Internet, experts have warned. The new virus, labeled Perrun, infects ...