http://gizmodo.com/5477367/chinese-hacker-responsible-for-google-attack-code-identified said:
U.S. authorities have tracked down the man who wrote the code used in the hacker attack on Google. He's a "freelance security consultant" in China, and his participation makes it even harder for the Chinese government to deny involvement.
The man's role was an oblique one: while he wrote the code that took advantage of a security hole in Internet Explorer, he himself didn't do any actual hacking. But according to the Financial Times, the Chinese government has "special access" to his work: