The release of new documents by Wikileaks reveal that U.S. officials believed that the Chinese government was behind the hacking of Google accounts and U.S. government websites. From AFP:
The secret cables obtained by whistleblower site WikiLeaks said that China’s Politburo directed the hacking. It cited a cable from the US embassy in Beijing, which mentioned information from “a Chinese contact.”
“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,” the Times said, citing the cable.
Chinese operatives are also believed to have broken into computers of US and Western allies along with those of Tibet’s exiled spiritual leader the Dalai Lama, it said.
See also a report from Reuters on the Wikileaks documents.
The relevant cables released by Wikileaks which originated from the U.S. Embassy in Beijing can be found here.