A cyberattack on the US government’s personnel office compromised the data of up to 4 million current and former federal employees, officials said Thursday.
The FBI said it is investigating a hack of network security at the Office of Personnel Management. Federal officials suspect Chinese hackers are behind the data breach, believed to be the largest in a recent wave of attacks targeting federal agencies, according to The Wall Street Journal.
“The FBI is working with our interagency partners to investigate this matter,” the FBI 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 Chinese consulate in San Francisco did not immediately respond to a request for comment.
Investigators told the Journal that the hack, detected in April, is believed to be separate from an attack detected last year. The New York Times reported last year that Chinese hackers worked their way into US government servers in March 2014 in an attempt to steal information on thousands of federal employees with top-secret clearance.
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