Did China hack into Google's domestic spying software?

Kind of sounds like it.

This appears to indicate that the state-sponsored Chinese hackers have hacked into the portion of the Google infrastructure that deals with government warrants, intercepts, national security letters and other modalities pertinent to the Terrorist Surveillance Program. That, if true, could be very problematic, one would think....

[I]f Google’s Mountain View HQ search warrant search interface/computer was hacked, we are probably talking about the same computer used by the Google Legal Department to perform queries in response to DOJ warrants, subpoenas, national security letters, and FISA orders.

More background on China's foray into Google's computers.