Security contractor breach not detected for months

In this photo taken Oct. 17, 2014, the USIS building in Falls Church, Va. A cyber-attack similar to previous hacker intrusions from China penetrated computer networks for months at USIS, the government’s leading security clearance contractor, before the company noticed the break-in, officials and others familiar with an FBI investigation and related official inquiries told The Associated Press. The breach compromised the private records of at least 25,000 employees at the Homeland Security Department and cost the company hundreds of millions of dollars in lost government contracts. (AP Photo/J. Scott Applewhite)WASHINGTON (AP) — A cyberattack similar to previous hacker intrusions from China penetrated computer networks for months at USIS, the government’s leading security clearance contractor, before the company noticed, officials and others familiar with an FBI investigation and related official inquiries told The Associated Press.

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