By Jim Finkle and Mark Hosenball BOSTON/WASHINGTON (Reuters) – A cyber attack at a firm that performs background checks for U.S. The breach at Falls Church, Virginia-based US Investigations Services (USIS) exposed highly personal information of workers at the Department of Homeland Securitys headquarters as well as its U.S.

By Jim Finkle and Mark Hosenball BOSTON/WASHINGTON (Reuters) – A cyber attack at a firm that performs background checks for U.S. The breach at Falls Church, Virginia-based US Investigations Services (USIS) exposed highly personal information of workers at the Department of Homeland Securitys headquarters as well as its U.S.