A computer virus is a program that can attach itself to, or infect, other programs or parts of your disk. Viruses do something malicious or comical to your computer.
Common types are trojan horses, macro and worms.
As the Internet proliferates and more people come on line, the risk of computer viruses spreading continues to grow. Some are malicious and will render your computer inoperable. Updating your anti-virus software doesn t mean just scanning your PC for viruses. It includes downloading updated virus definitions from your anti-virus vendor. Keep your anti-virus software subscription up to date.