Hackers knock out obscure Web sites
WASHINGTON -- A battle among hackers erupted Sunday on the Internet as some factions disrupted a loosely coordinated "contest" among other groups trying to vandalize thousands of Web sites around the world. Unknown attackers for hours knocked offline an independent security Web site, zone-h.org, that was verifying reports of online vandalism and being used by hackers to tally points for the competition. U.S. government and private technology experts warned last week that such vandalism was likely.

