VirusFAQ Virus FAQ's Virus Info. A Virus is a program maliciously written by an individual to spread itself to other uninfected programs or files.
Some viruses can be harmless while others can cause major problems with computer data.
Basically, a computer virus is a threat to the security and integrity of your computer system. There are several ways one can get a computer virus. Be alert of any changes. Executable files may be larger than their usual size. Computer takes longer to start.