TechCrunch reports the cables leaked by WikiLeaks confirm that China's Politburo was behind the Google hacking incident:
According to the NYT, some of the new leaked cables point directly at China’s Politburo for instigating the original attacks:
A global computer hacking effort: China’s Politburo directed the intrusion into Google’s computer systems in that country, a Chinese contact told the American Embassy in Beijing in January, one cable reported. The Google hacking was part of a coordinated campaign of computer sabotage carried out by government operatives, private security experts and Internet outlaws recruited by the Chinese government. They have broken into American government computers and those of Western allies, the Dalai Lama and American businesses since 2002, cables said.