A few hacker teams do most China-based hacking

As few as 12 different Chinese groups, largely backed or directed by the government there, commit the bulk of the China-based cyber attacks stealing critical data from US companies and government agencies, according to US cybersecurity analysts and experts.
The aggressive but stealthy attacks, which have stolen billions of dollars in intellectual property and data, often carry distinct signatures allowing US officials to link them to certain hacker teams. Analysts say the US often gives the attackers unique names or numbers, and at times can tell where the hackers are and even who they may be.
Sketched out by analysts who have worked with US companies and the government on computer intrusions, the details illuminate recent claims by American intelligence officials about the escalating cyber threat emanating from China. And the widening expanse of targets, coupled with the expensive and sensitive technologies they are losing, is putting increased pressure on the US to take a much harder stand against the communist giant.


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