BEIJING — Chinese hackers repeatedly penetrated The New York Times' computer systems over the past four months, stealing reporters' passwords and hunting for files on an investigation into the wealth amassed by the family of a top Chinese leader, the newspaper reported Thursday.
Security experts hired to investigate and plug the breach found that the attacks used tactics similar to ones used in previous hacking incidents traced to China, the report said. It said the hackers routed the attacks through computers at U.S. universities, installed a strain of malicious software, or malware, associated with Chinese hackers and initiated the attacks from Chinese university computers previously used by the Chinese military to attack U.S. military contractors.
Meanwhile, The Wall Street Journal said its computer systems also have been infiltrated by Chinese hackers who were trying to monitor the newspaper's coverage of China.
A spokeswoman for Dow Jones & Co., the newspaper's publisher, says the Journal completed a network overhaul to bolster security on Thursday.
The attacks at the New York Times, which began in mid-September, coincided with a Times investigation into how the relatives and family of Premier Wen Jiabao built a fortune worth over $2 billion. The report, which was posted online Oct. 25, embarrassed the Communist Party leadership, coming ahead of a fraught transition to new leaders and exposing deep-seated favoritism at a time when many Chinese are upset about a wealth gap.
Over the months of cyber-incursions, the hackers eventually lifted the computer passwords of all Times employees and used them to get into the personal computers of 53 employees.
The report said none of the Times' customer data was compromised and that information about the investigation into the Wen family remained protected, though it left unclear what data or communications the infiltrators accessed.
Computer security experts found no evidence that sensitive emails or files from the reporting of our articles about the Wen family were accessed, downloaded or copied, the report quoted executive editor Jill Abramson as saying.
The Chinese foreign and defense ministries called the Times' allegations baseless, and the Defense Ministry denied any involvement by the military.