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what is a computer worm

2006-12-14 11:18:30,from:WOW

what is a computer worm

WORM is also called CD-R. Worms are very similar to viruses in that they are computer programs that replicate themselves and that often, but not always, contain some functionality that will interfere with the normal use of a computer or a program.

The difference is that unlike viruses, worms exist as separate entities; they do not attach themselves to other files or programs. A worm can spread itself automatically over the network from one computer to the next. Worms take advantage of automatic file sending and receiving features found on many computers.

Here's the definition:

(1) A program or algorithm that replicates itself over a computer network and usually performs malicious actions, such as using up the computer's resources and possibly shutting the system down. Also see virus.

Also see The Difference Between a Virus, Worm and Trojan Horse  in the Did You Know? section of Webopedia.

(2) When used in all capital letters, WORM is an acronym for for write once, read many, an optical disk technology that allows you to write data onto a disk just once. After that, the data is permanent and can be read any number of times.

Unlike CD-ROMs, there is no single standard for WORM disks, which means that they can only be read by the same type of drive that wrote them. This has hampered their acceptance, although they have found a niche market as an archival media.

 





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