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Code Red worm

On July 19, 2001 a computer worm affecting Microsoft's Internet Information Server (IIS) web server was unleashed on the Internet. It soon became known as Code Red. This worm exploited a vulnerability in the indexing software distributed with IIS and did several things:

  • It defaced the affected web site to display:
    "HELLO! Welcome to http://www.worm.com! Hacked By Chinese!"
  • It tried to spread itself by looking for more IIS servers on the Internet.
  • It waited 20-27 days after it was installed to launch denial of service attacks to the several fixed IP addresses. The IP address of the White House web server was among those.

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