The Department of Homeland Security has begun performing polygraph tests on employees to determine who might be leaking information to the media about immigration operations, according to four sources ...

Federal agencies have stepped up their efforts over the past few weeks to find potential leakers, and some — like the FBI, the Department of Homeland Security and the Department of Defense — are ...

Add Yahoo as a preferred source to see more of our stories on Google. A recent polygraph test taken in Orange County, Calif., has brought the validity of polygraphs — also called “lie detector tests” ...

The Federal Bureau of Investigation (FBI) has found itself embroiled in a rather odd situation involving polygraph tests. In April, it confirmed to NPR that it was using these tests to catch personnel ...

The Department of Homeland Security has begun administering polygraph tests to employees in an effort to identify those leaking information about immigration operations to the media, according to four ...