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
Email-Worm.Rays 99/10 27 September 2, 2010
Email-Worm.Rontokbro October 6, 2010
Email-Worm.Rontokbro!rem 55/10 1 December 14, 2010
Email-Worm.Runouce.b April 16, 2010
Email-Worm.Scrambler 99/10 0 November 9, 2007
Email-Worm.Swen 99/10 0 August 30, 2007
Email-Worm.Tanatos.a 99/10 0 November 30, 2007
Email-Worm.VBS.Gedza 99/10 35 August 24, 2007
Email-Worm.Warezov!sd5 May 30, 2011
Email-Worm.Warezov.G!rem December 21, 2010
Email-Worm.Win32.Agent.li April 1, 2010
Email-Worm.Win32.Bagle.fj March 9, 2011
Email-Worm.Win32.Bagle.fk October 19, 2009
Email-Worm.Win32.Bagle.gen July 16, 2010
Email-Worm.Win32.Brontok.ai February 17, 2011
Email-Worm.Win32.Brontok.n April 6, 2011
Email-Worm.Win32.Gibon.as 66/10 0 October 21, 2009
Email-Worm.Win32.Hlux.c 88/10 0 January 5, 2011
Email-Worm.Win32.Iksmas.frg November 11, 2009
Email-Worm.Win32.Joleee.efc 99/10 2 November 6, 2009
Email-Worm.Win32.Joleee.eja December 2, 2009
Email-Worm.Win32.Merond.a August 4, 2009
Email-Worm.Win32.Mydoom.m 55/10 0 October 20, 2009
Email-Worm.Win32.NetSky.q 99/10 0 January 14, 2010
Email-Worm.Win32.NetSky.x December 11, 2009
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