What are Virus?

Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation. A virus might corrupt or delete data on your computer, use your e-mail program to spread itself to other computers, or even erase everything on your hard disk. Viruses are most easily spread by attachments in e-mail messages or instant messaging messages. That is why it is essential that you never open e-mail attachments unless you know who it's from and you are expecting it. Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files. Viruses also spread through downloads on the Internet. They can be hidden in illicit software or other files or programs you might download. Once a virus is on your computer, its type or the method it used to get there is not as important as removing it and preventing further infection.

Something that attacks the computer like when someone gets sick and dose not function as well as they normally do.

Viruses are programmes.

A virus is a computer program which distributes copies of itself without the permission of knowledge of the user. A computer virus is often simply called a virus. The term is commonly used to refer to a range of malware, but a true virus does not need to be harmful. To distribute itself, a virus needs to execute. Viruses often hide themselves inside other program to be executed.

Viruses are things that spoil things.May it be your health or your computer.

Computer virus are just merly programms, they execute without your consent. And Virus today has its special features which is the stealth technology. Its undetectable with your system, besure to have the most updated version. Most virus now a days can crash your hardisk by destroying the Track 0 of you HD. Thus making the drive useless. have your system protectec and pls. install fire wall when using the net.