"Many analysts in Seoul suspect that North Korean hackers honed their skills in China and were operating there. At a hacking conference here last year, Michael Sutton, the head of threat research at Zscaler, a security company, said a handful of hackers from China 'were clearly very skilled, knowledgeable and were in touch with their counterparts and familiar with the scene in North Korea.'
"But there has never been any evidence to back up some analysts' speculation that they were collaborating with their Chinese counterparts. 'I've never seen any real evidence that points to any exchanges between China and North Korea,' said Adam Segal, a senior fellow who specializes in China and cyberconflict at the Council on Foreign Relations."
The AP reports that this kind of attack does not look like any of the previous attacks launched by China. Chinese hackers are interested in collecting intelligence and intellectual property, the AP reports. They're not usually interested in causing disruptions to commerce.
"The U.S. should not forget that the Andersen base on Guam where B-52s take off and naval bases on the Japan mainland and Okinawa where nuclear-powered submarines are launched, are all within the range of our precision target assets," the Times quotes a "North Korean army spokesman" as saying.