Background-check firm says the breach "has all the markings of a state-sponsored attack."
U.S. Investigations Services, a major provider of background checks for the Department of Homeland Security, suffered a data breach that "has all the markings of a state-sponsored attack," the firm said Aug. 6.
The cyberattack, the scale of which is still unclear, might have resulted in the theft of DHS employees' personal information, an agency spokesman said. DHS has stopped working with USIS until security is restored.
"As we continue to investigate the nature of this breach on an urgent basis, we will be notifying specific DHS employees whose PII [personally identifiable information] we can determine was likely compromised," DHS spokesman Peter Boogaard said.
Falls Church, Va.-based USIS describes itself as the federal government's largest private provider of background checks. The firm said it spotted the attack on its own and notified the Office of Personnel Management and other agencies right away. USIS has hired a computer forensics firm to investigate the incident.
DHS and the FBI are part of a cross-agency group responding to the breach, Boogaard said. "Our forensic analysis has concluded that some DHS personnel may have been affected, and DHS has notified its entire workforce … to advise them to monitor their financial accounts for suspicious activity."
USIS handled background checks for Navy Yard shooter Aaron Alexis and National Security Agency contractor-turned-leaker Edward Snowden. Some senior lawmakers have questioned why USIS is still being awarded federal contracts after the Justice Department joined a civil lawsuit in January alleging the firm left at least 665,000 background checks incomplete over a 4 1/2-year period. Neither Alexis' nor Snowden's investigation is a subject of the lawsuit.
Rep. Elijah Cummings (D-Md.) and Sen. Tom Coburn (R-Okla.) sent a letter last month to DHS Secretary Jeh Johnson questioning the wisdom of awarding USIS a potentially $190-million contract with Citizenship and Immigration Services.
Senate Homeland Security and Governmental Affairs Committee Chairman Tom Carper (D-Del.) said the newly discovered USIS breach "underscores the scary reality of how much of a target our sensitive information has become in cyberspace. It also shows how urgent it is that we reform our laws to better combat attacks from malicious actors."
Carper said that legislation to update the Federal Information Security Modernization Act, recently approved by his committee, would help "modernize our antiquated, inadequate federal cyber policies."