SHANGHAI — A day after a United States security company accused a People’s Liberation Army unit in Shanghai of engaging in cyberwarfare against American corporations, organizations and government agencies, China’s defense ministry issued a strong denial and insisted that the report was flawed.
At a news conference in Beijing Wednesday, the ministry suggested the allegations were destructive and challenged the study, which was produced by Mandiant, an American computer security company. The report identified P.L.A. Unit 61398 in Shanghai as one of the most aggressive computer hacking operations in the world.
Geng Yansheng, a spokesman for China’s Ministry of National Defense, said that China had been the victim of cyberattacks that have originated in the United States, and that Mandiant mischaracterized China’s activities.
“Chinese military forces have never supported any hacking activities,” Mr. Geng said at the briefing. “The claim by the Mandiant company that the Chinese military engages in Internet espionage has no foundation in fact.”
On Tuesday, a spokesman for China’s Foreign Ministry, Hong Lei, made similar remarks, arguing that cyberattacks are difficult to trace because they are “often carried out internationally and are typically done so anonymously.”
The New York Times reported on Tuesday that a growing body of digital forensic evidence pointed to the involvement of the P.L.A. Shanghai unit and that American intelligence officials had also been tracking the unit’s activities.
On its Web site, Mandiant released a lengthy report on Tuesday detailing some of its evidence, including Internet protocol addresses and even the identities of several Chinese individuals it believes were behind some of the attacks. Mandiant said it monitored the hackers as they logged onto social networking sites or through e-mail accounts.
Attempts to contact two of the individuals through telephone numbers and instant message services were unsuccessful. In one case, one of the individuals — whose online profile says he is 28 years old and a graduate of a university that specializes in computer science — declined to answer questions.
Several military analysts said they had also traced some major cyberattacks back to the People’s Liberation Army. and its Shanghai Unit 61398, which is known to be engaged in network security.
Still, many security experts concede that it is difficult if not possible to know for certain where attacks originate because hackers often take control of computers in various locations.
Chinese officials have insisted in recent years that China is one of the biggest targets of cyberattacks.
“Statistics show that Chinese military terminals connected to the Internet have been subjected to large numbers of attacks from abroad, and I.P. addresses indicate that a considerable number of these attacks are from the United States, but we have never used this as a reason to accuse the United States,” the defense ministry said Wednesday. “Every country should handle the problem of cybersecurity in a professional and responsible manner.”
China Says Army Is Not Behind Attacks in Report
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China Says Army Is Not Behind Attacks in Report
