A 20-year-old California man has <A HREF="http://news.zdnet.com/2100-1009_22-6069238.html?tag=zdnn.alert">pleaded guilty to launching a bot network attack</A> that compromised computers at a Seattle hospital and several universities. Christopher Maxwell, a Vacaville, Calif., resident, was accused of intentionally damaging a computer he was not authorized to access and using it to commit fraud. He made the guilty plea on Thursday in federal district court in Seattle.