Overall, investigators have identified 441,000 computer systems hacked by Christopher Maxwell's robot virus, including 104 country domains, 276 ".net" domains, 128 ".com" domains, and 28 ".edu" domains. The virus was planted between July 2004 and July 2005, federal investigators said.

A 20-year-old California hacker who created a virus that jeopardized patients at Northwest Hospital in Seattle, damaged computers at U.S. military installations worldwide and affected thousands of others will be sentenced today. Federal prosecutors will ask U.S. District Judge Marsha Pechman to send Christopher Maxwell to prison for six years.