According to a leaked draft of the US-China Economic and Security Review Commission’s annual report to Congress, obtained by Bloomberg News a week before its scheduled release, Chinese hackers are employing “increasingly advanced types of operations or operations against specialized targets.”
A US intelligence official interviewed by Bloomberg describes the Chinese as having been “relentless” in its efforts to “blind or disrupt” those targets, which include “deployed US military platforms,” as well as “US intelligence and communications satellites, weapons targeting systems, and navigation computers.”
http://www.bloomberg.com/news/2012-11-05/china-most-threatening-cyberspace-force-u-s-panel-says.html
Latest published report on China in the cyber arena :http://www.uscc.gov/RFP/2012/USCC%20Report_Chinese_CapabilitiesforComputer_NetworkOperationsandCyberEspionage.pdf
ClearSky Cyberdefense Forum 