Virus

virus A virus is any type of software that embeds itself into your computer and can then replicate itself by infecting other computers through a network, Internet connection or removable media such as CD, usb thumb drive or floppy disk. Though the term is often confused or mistakenly used to mean other types of spyware or general malware, a virus is malicious software that actually copies itself to other computers and infects them.

Though they can be transmitted by the physcial "sneaker net" (carried from pc to pc via disk or USB drive), they are most often transmitted via e-mail.
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Though by definition a virus must have a reproductive function, it is often used to refer to other types of malware such as trojan horses, rookits, etc. that do not replicate themselves. A host computer must first be infected, possibly by a regular, manual hack attempt, or it could be infected by payload carried by another application such as a trojan horse or other spyware.

A virus only needs one host computer to start its infestation process to other computers, since replication is one of the main functions. A host PC is infected, and then the virus may send itself out to every person on the host computer's email address book. Every recipient of the email who doesn't use virus protection is at risk of infection. Those that are newly infected in turn become new virus hosts, which then replicate to more computers, again possibly found from the new host's email address book. The cycle then continues.

We suggest using a capable virus scanner and remover regularly. These applications can even run in the background to alert you of any incoming virus before it has the chance to deploy its infection or replication process. If you suspect you have a virus on your computer, get started with our step-by-step spyware remover software guide right away.

Virus News

Artists commemorate the worst computer viruses in history Online gallery Computer Virus Catalog sees artists from around the world interpreting and visualising the most famous viruses to hit our hard drives.

11 Trippy Illustrations of History’s Most Infamous Computer Viruses Malware isn’t meant to be entertaining, and yet, many of the viruses that sneak their way into our computers are really just malicious displays of extreme creativity.

History's worst computer viruses visualised as art         "Computer viruses. We hate 'em. Nevertheless, we remain fascinated by their evil plots. This fascination led to a new kind of art collection," explains Bas van de Poel in the Computer Virus Catalog "About" section. The Computer Virus Catalog is a website displaying a range of artworks, each of which is based on or inspired by a famous computer-invading worm. It describes itself as an ...