What is Viruses

A piece of programming code usually disguised as something else that causes some unexpected and, for the victim, usually undesirable event and which is often designed so that it is automatically spread to other computer users. Viruses can be transmitted by sending them as attachments to an e-mail note, by downloading infected programming from other sites, or be present on a diskette or CD. The best protection against a virus is to know the origin of each program or file you load into your computer or open from your e-mail program.