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|
|Conficker A/B||May 31, 2010|
|Conficker B++||5/10||284||February 21, 2009|
|Conficker.C||5/10||79||March 25, 2009|
|Conficker.e||March 8, 2009|
|Corrupt-EP||July 23, 2010|
|CrazyCoin||March 20, 2020|
|Cridex-B||8/10||18||February 7, 2012|
|DMSetUp||December 28, 2008|
|Dorkbot||5/10||1,561||November 27, 2012|
|Downadup||January 27, 2009|
|Email-Worm.Abotus!sd5||August 27, 2010|
|Email-Worm.Ackantta||May 27, 2010|
|Email-Worm.Ackantta!rem||June 3, 2011|
|Email-Worm.Agent.l||6/10||0||September 28, 2007|
|Email-Worm.Beagle||June 2, 2010|
|Email-Worm.Bobax||9/10||0||June 18, 2010|
|Email-Worm.Bugbear.b||9/10||0||November 30, 2007|
|Email-Worm.Chir||7/10||0||September 16, 2010|
|Email-Worm.Erkez.D||9/10||0||October 12, 2007|
|Email-Worm.Erkez.F||9/10||0||October 12, 2007|
|Email-Worm.Evaman.a||9/10||0||August 17, 2007|
|Email-Worm.Mydoom.B!rem||May 27, 2011|
|Email-Worm.Mytob||9/10||498||June 28, 2010|
|Email-Worm.Nyxem||April 23, 2010|
|Email-Worm.Pacrac||9/10||0||January 18, 2008|