, SecurityFocus 2003-09-03
The U.S. Nuclear Regulatory Commission on Tuesday issued a formal Information Notice to nuclear power plant operators warning them about an incident in January in which the Slammer computer worm penetrated networks at Ohio's Davis-Besse nuclear plant and disabled two important monitoring systems for hours.

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The Times said the incident at Davis-Besse was "not made public until Kevin Poulsen reported it on Aug. 20 on SecurityFocus.com"
http://www.nytimes.com/2003/09/07/technology/07WORM.html
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