Chinese state media stepped up the war of words on Thursday over allegations of sophisticated cyberattacks on US firms, branding the accusations a "commercial stunt" and accusing Washington of ulterior motives.
American Internet security firm Mandiant earlier this week said that a Chinese military cyberspy unit is targeting US and other foreign firms and organisations with hacking attacks.
How did security firm Mandiant put names to two previously unknown Chinese hackers who, it says, steal American corporate secrets for the Chinese government? With a little inadvertent help from Anonymous.
A private technology security firm on Tuesday described in extraordinary detail efforts it blamed on a Chinese military unit to hack into 141 businesses, mostly inside the U.S., and steal commercial secrets. China denies the claim. Here's a look at the company, Mandiant, and why its report is significant.
What is Mandiant?
Thanks to cybersecurity firm Mandiant, we now have a video of a hacker believed to be linked to the Chinese military infiltrating and stealing files from unidentified English language targets.
The video comes as part of Mandiant's 60-page report, first reported by the New York Times, that claims China's military is responsible for cyberattacks on more than 140 foreign businesses, many of which are in the United States.
A secretive Chinese military unit is believed to be behind a prolific series of hacking attacks, a U.S. computer security company said, contradicting claims by China's government that it is not involved in such operations.
The report by Mandiant identified the People's Liberation Army's Shanghai-based Unit 61398 as the most likely driving force behind the hacking. Mandiant said it believed the unit had carried out "sustained" attacks on a wide set of industries.