Sergei Shestakov, a former Russian diplomat who became a naturalized US citizen, is set to go on trial for work he did – ...

Asif William Rahman, a former CIA analyst, was sentenced to 37 months in prison for unlawfully transmitting and retaining top secret U.S. national defense information.

Pentagon investigator admits to faking dozens of Top Secret security clearance background checks - Exclusive: Nousheen ...

It will cost less than $400 million to turn a luxury Qatari jet into President Trump's airborne command center, according to ...

The Defense Counterintelligence and Security Agency sought a managed service provider amid ongoing efforts to enroll all ...

The counterintelligence mission needs to be assigned to a new agency outside the FBI. The threat is too great and the FBI's ...

Cryptocurrency company founder Iurii Gugnin faces an indictment for money laundering and evading U.S. sanctions against ...

Two veteran FBI agents in Virginia have been forced out after information surfaced they are not supportive of President ...

Han is the third Chinese scientist to be accused of smuggling biological materials into Michigan in recent weeks.