Any virus will by definition make unauthorised changes to a computer, which is undesirable even if no damage is done or intended.

Chances are you’ve heard how important it is to keep viruses out, but what is a computer virus exactly? A computer virus is a type of malicious software, or malware, that spreads between …

Jul 23, 2025 · What is a Computer Virus? A computer virus is a type of malicious software program ("malware") that, when executed, replicates itself by modifying other computer …

May 22, 2025 · What Is a Computer Virus, Really? You’ve heard the term, but what does it actually mean? Learn from our expert how these self-replicating programs sneak in, spread, …

Viruses are harmful and can destroy data, slow down system resources, and log keystrokes. Cybercriminals aren’t creating new viruses all the time, instead they focus their efforts on more …

A computer virus is a malicious application or code used to perform destructive activity. Learn exactly what it is, how it works, examples, and more.

Oct 8, 2025 · Basically, computer viruses are a kind of malware that install themselves on a device and multiply. Some viruses are designed to steal or corrupt data, while others are …