A Fairfield, California, hacker has pleaded guilty to launching a Valentine's Day 2007 computer attack that nearly knocked an anti-phishing Web site offline. Gregory King, 21, pleaded guilty in federal court to two counts of "transmitting code to cause damage to a protected computer," for launching distributed denial of service attacks against the Castlecops anti-phishing Web site and Killanet , an online forum for gamers and graphic designers.