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Massive cyber attack hits US federal workers, probe focuses on China

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Hackers broke into US government computers, possibly compromising the personal data of 4 million current and former federal employees, and investigators were probing whether the culprits were based in China, US officials said on Thursday.

[WASHINGTON] Hackers broke into US government computers, possibly compromising the personal data of 4 million current and former federal employees, and investigators were probing whether the culprits were based in China, US officials said on Thursday.

In the latest in a string of intrusions into US agencies'high-tech systems, the Office of Personnel Management suffered what appeared to be one of the largest breaches of information ever on government workers. The office handles employee records and security clearances.

A US law enforcement source told Reuters a "foreign entity or government" was believed to be behind the cyber attack. Authorities were looking into a possible Chinese connection, a source close to the matter said.

A Chinese Embassy spokesman in Washington said hypothetical accusations were irresponsible and counterproductive. He said it was hard to track hacker activity across borders.

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The FBI said it had launched a probe and aimed to bring to account those responsible.

OPM detected new malicious activity affecting its information systems in April and the Department of Homeland Security said it concluded at the beginning of May that the agency's data had been compromised and about 4 million workers may have been affected.

The agencies involved did not specify exactly what kind of information was accessed.

The breach hit OPM's IT systems and its data stored at the Department of the Interior's data center, a shared service center for federal agencies, a DHS official said on condition of anonymity. The official would not comment on whether other agencies' data had been affected.

OPM had previously been the victim of another cyber attack, as have various federal government computer systems at the State Department, the US Postal Service and the White House.

Chinese hackers were blamed for penetrating OPM's computer networks last year, and hackers appeared to have targeted files on tens of thousands of employees who had applied for top-secret security clearances, the New York Times reported last July, citing unnamed US officials. "The FBI is working with our interagency partners to investigate this matter," the bureau said in a statement. "We take all potential threats to public and private sector systems seriously, and will continue to investigate and hold accountable those who pose a threat in cyberspace." The US government has long raised concerns about cyber spying and theft emanating from China and has urged Beijing to do more to curb the problem.

Chinese Embassy spokesman Zhu Haiquan said in reply to a Reuters query that China had made great efforts to combat cyber attacks. "Jumping to conclusions and making (a) hypothetical accusation is not responsible," and is "counterproductive," Mr Zhu said in emailed comments.

There was no comment from the White House.

Since the intrusion, OPM said it had implemented additional security precautions for its networks. It said it would notify the 4 million employees and offer credit monitoring and identity theft services to those affected.

"The last few months have seen a series of massive data breaches that have affected millions of Americans," US Representative Adam Schiff, the ranking Democrat on the House Permanent Select Committee on Intelligence, said in a statement.

He called the latest intrusion "among the most shocking because Americans may expect that federal computer networks are maintained with state-of-the-art defenses." "It's clear that a substantial improvement in our cyber databases and defenses is perilously overdue," Mr Schiff added.

REUTERS

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