Sitting down at a desk overlooking the Fort Leavenworth military base, Henderson started, like any novice, with Google. Using Mandarin characters, he typed heike -- literally, "black guest" -- pulling up the characters for "hacker." Probably, he thought, he'd find articles rehashing weak Western reports. But when he hit "return," his browser displayed a slew of unfamiliar sites: hackbase.com, hacker123.com, hack8.cn. There were hundreds, maybe thousands. He quickly realized that each was the online headquarters of a Chinese hacker organization, with detailed logs of hacks, contact information for hackers, and forums where users discussed targets. Chinese hackers, it turns out, take credit on their own sites for attacks, leaving a long trail of documentation. They are so attention-driven that when they post images of their successes to online trophy rooms, they tag them with e-mail addresses, URLs, even cellphone numbers. Within three minutes, Henderson had more information than he knew what to do with.