What is Computer worm?
A '''computer worm''' is a kind of [[malware]] that is able to copy itself, and spread. Unlike a [[computer virus]], this is done without changing files on a computer, and without affecting the [[boot sector]] of media. Worms do not need human help to reproduce. Worms spread over networks, or on removable media like [[USB flash drive]]s. They almost always need a helper program that is able to access the network, or that executes when a new medium is inserted. In that way, a Worm could start a program to send [[electronic mail]], and send itself on to all the addresses in the address book of the email application. A very famous worm that appeared in 2000 was called [[ILOVEYOU]] (or ''Love Letter''), it sent a simple mail with the subject '''ILOVEYOU''', and an [[email attachment|attachment]] of a document that contained the worm code. Worms usually do not cause direct damage to a system. But they consume memory and network bandwidth, slowing down the computer. This makes it almost impossible to work with. Other examples of Worms are '''CodeRed''' and '''Sircam'''. {{tech-stub}} [[Category:Malware]]