U.S. intelligence agencies spend millions to hunt for insider threats, document shows
By Carol D. Leonnig, Julie Tate and Barton Gellman, Published: September 1 The U.S. government suspects that individuals with connections to al-Qaeda and other hostile groups have repeatedly sought to obtain jobs in the intelligence community, and it reinvestigates thousands of employees a year to reduce the threat that one of its own may be trying…