Worms

A computer worm is a self-replicating computer program. It uses a network to send copies of itself to other nodes (computers on the network) and it may do so without any user intervention. Unlike a virus, it does not need to attach itself to an existing program. Worms almost always cause at least some harm to the network, if only by consuming bandwidth, whereas viruses almost always corrupt or devour files on a targeted computer.

Many worms that have been created are only designed to spread, and don’t attempt to alter the systems they pass through. A “payload”, however, is code designed to do more than spread the worm it might delete files on a host system, encrypt files in a cryptoviral extortion attack, or send documents via e-mail. A very common payload for worms is to install a backdoor in the infected computer to allow the creation of a zombie (an Internet accessible computer compromised by a hacker) under control of the worm author. Networks of such machines are often referred to as botnets and are very commonly used by spam senders for sending junk email or to cloak their website’s address.

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There are currently 965 articles listed on worms.

Name	Threat Level	Detection Count	Date
TextImage/Conficker			June 11, 2010
TROJ_MALLU9.A			October 19, 2009
Troj/iframe-ET	1/10	672	June 1, 2010
Trojan Horse Agent3.BJDF	8/10	0	March 6, 2012
Uncensored	5/10	1	December 27, 2011
VBS_CRIGENT.LK	5/10	0	April 10, 2014
VBS.AutoRun.ag	5/10	5	September 21, 2010
VBS.Runauto.G			August 27, 2009
VBS.Runauto.H			January 21, 2010
VBS.Sasan			July 14, 2009
VBS/Autorun.worm.aapn!lnk	5/10	0	March 11, 2014
VBS/Joint-A	5/10	4,721	December 7, 2011
VBS/SST-A	5/10	0	March 6, 2012
VirTool:INF/Autorun.gen!F	7/10	0	October 22, 2012
VirTool:INF/Vobfus.gen	5/10	0	July 2, 2013
VirTool.Tinxy.A			October 14, 2009
Virus.DOS.Email_Worm			March 23, 2011
Virus.DOS.Net_Worm	5/10	284	September 7, 2010
Virus.Mariofev.A	7/10	0	September 14, 2009
Virus.Win32.Hala.a			December 3, 2009
W32.Ackantta.B@mm	9/10	0	July 21, 2009
W32.Ackantta.H@mm			October 8, 2010
W32.Addnu	5/10	1	November 13, 2012
W32.Aemrant	5/10	0	June 14, 2010
W32.Alcra.F			July 21, 2009

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