Virus and Its Properties

A computer virus is a small software program that spreads from one computer to another computer and that interferes with computer operation.Viruses can spread from one system to another system on a network. Computer viruses are most easily spread by attachments in e-mail messages or by instant messaging messages. Therefore, you must never open an e-mail attachment unless you know who sent the message or unless you are expecting the e-mail attachment. Computer viruses also spread by using downloads on the Internet. Computer viruses can be hidden in pirated software or in other files or programs that you may download. A true virus can spread from one computer to another, when its host is taken to the target computer. They are platform independent which means it can affect any operating system depending on its programming function. They can even disable or destroy hardware.

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