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

The style and purpose of viruses runs the gamut. Following is a small sampling. See Sophos and virus. The fastest spreading virus in history appears to have been written by a resident of Manila in the ...

Of all the accomplishments in the annals of technology, Fred Cohen's contribution is undeniably unique: He introduced the term "virus" to the lexicon of computers. The University of New Haven ...

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, ...

To a lot of people, a "virus" is often the first thing they think of when something goes wrong with their computer. The truth is, that these days a virus is almost never the culprit for your PC ...

On May 4, 2000, users of Windows computers began receiving an email with a malicious attachment. Within just ten days, some fifty million infections were reported, and it has been estimated that as ...

The study of computer virus propagation models is central to understanding and mitigating digital epidemics that disrupt modern network infrastructures. Researchers have adopted a range of techniques, ...

Computer viruses can invade your system without you noticing, disrupting its operation and even stealing your data. To protect your device, it's important to know how to recognize signs of infection, ...

Retroviruses are a type of virus in the viral family called Retroviridae. They use RNA as their genetic material and are named for a special enzyme that’s a vital part of their life cycle — reverse ...

A computer virus in the DOS/Windows environment that takes advantage of the fact that .COM and .EXE are two valid executable extensions for program files, and .COM takes precedence. For example, if ...

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 ...