The personal information of 4 million U.S. federal employees were compromised in a breach affecting the U.S. Office of Personnel Management and Department of the Interior, according to a statement issued this evening by the Department of Homeland Security. The breach might affect every government agency.
U.S. officials suspect China-based hackers are to blame, but investigations are ongoing.
The Office of Personnel Management is the human resources department for the federal government, and conducts most of the background checks for these workers.
See more at the Associated Press and Dow Jones. Return to DarkReading for more as the story develops.