Discover the common signs that your computer may have a virus and how to identify potential threats to your device.

Viruses are pieces of code attached to a computer program. When a computer runs an infected program, the virus launches and embeds itself in the computer’s memory. It then looks for other ...

What Is a Computer Virus? A computer virus is a program. Like other programs, it’s defined by what it does, and the big thing a virus does is replicate itself.

What Is a Computer Virus? A computer virus is a program. Like other programs, it’s defined by what it does, and the big thing a virus does is replicate itself.

A computer virus is a form of malicious software that piggybacks onto legitimate application code in order to spread and reproduce itself.

It is unlikely a virus would cause disk thrashing, but several viruses running a computer that's already disk thrashing can increase the severity of the issue and contribute to hard-drive wear.

How two Pakistani brothers and one piece of runaway code created the anti-virus industry. It was early 1987, and security expert Roger Thompson had just seen his first computer virus, in a ...