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A computer virus [1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs. [2] [3] If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses. [4]
Computer viruses generally require a host program. [11] The virus writes its own code into the host program. When the program runs, the written virus program is executed first, causing infection and damage. A worm does not need a host program, as it is an independent program or code chunk.
Hex dump of the Blaster worm, showing a message left for Microsoft co-founder Bill Gates by the worm's programmer. This timeline of computer viruses and worms presents a chronological timeline of noteworthy computer viruses, computer worms, Trojan horses, similar malware, related research and events.
The outbreak was estimated to have caused US$5.5–8.7 billion in damages worldwide, [20] [21] [better source needed] and estimated to cost US$10–15 billion to remove the worm. [22] [23] Within ten days, over fifty million infections had been reported, [24] and it is estimated that 10% of Internet-connected computers in the world had been ...
To combat computer viruses and other malicious software, many security advisory organizations and anti-virus software developers compile and publish virus lists. When a new virus appears, the rush begins to identify and understand it as well as develop appropriate counter-measures to stop its propagation.
Blaster (also known as Lovsan, Lovesan, or MSBlast) was a computer worm that spread on computers running operating systems Windows XP and Windows 2000 during August 2003. [1] The worm was first noticed and started spreading on August 11, 2003. The rate that it spread increased until the number of infections peaked on August 13, 2003.
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