Editing Code Red (computer worm) (section)

{{short description|Computer worm}}
{{ infobox computer virus
|fullname       = .ida Code Red Worm
|image          = Website defaced by Code Red worm.png
|caption        = A website defaced by the worm
|common name    = Code Red
|technical name = CRv and CRvII
|aliases        = 
|family         =
|classification =
|type           = Server Jamming Worm
|subtype        =
|origin         =
|author         =
|ports used     =
|OSes           = 
|filesize       =
|language       = 
}}

'''Code Red''' was a [[computer worm]] observed on the [[Internet]] on July 15, 2001. It attacked computers running [[Internet Information Services|Microsoft's IIS web server]]. It was the first large-scale, [[Mixed threat attack|mixed-threat attack]] to successfully target enterprise networks.<ref name="TrendMicro">{{cite web |author=Trend Micro |title=Enterprise Prevention and Management of Mixed-Threat Attacks |url=http://www.biz.netvigator.com/chi/pdf/eps_whitepaper.pdf}}</ref>

The Code Red worm was first discovered and researched by eEye Digital Security employees [[Marc Maiffret]] and Ryan Permeh when it exploited a vulnerability discovered by Riley Hassell. They named it "Code Red" because they were drinking [[Mountain Dew Code Red]] at the time of discovery.<ref>[https://web.archive.org/web/20110722192419/http://www.eeye.com/Resources/Security-Center/Research/Security-Advisories/AL20010717 ANALYSIS: .ida "Code Red" Worm (archived copy from July 22, 2011)], Euaa advisory, eEye Digital Security, July 17, 2001</ref>

Although the worm had been released on July 13, the largest group of infected computers was seen on July 19, 2001. On that day, the number of infected hosts reached 359,000.<ref name="caida">{{cite web |last1=Moore |first1=David |last2=Shannon |first2=Colleen |title=The Spread of the Code-Red Worm (CRv2) |url=http://www.caida.org/research/security/code-red/coderedv2_analysis.xml |work=[[CAIDA]] Analysis |year=c. 2001 |access-date=October 3, 2006}}</ref>

The worm spread worldwide, becoming particularly prevalent in North America, Europe, and Asia (including China and India).<ref>{{cite web |title=Discoveries – Video – The Spread of the Code Red Worm |url=https://www.nsf.gov/discoveries/disc_videos.jsp?org=NSF&cntn_id=100075&media_id=51501 |website=[[National Science Foundation]]}}</ref>