Today's Washington Post reports on efforts to limit leaks of classified information at the CIA and NSA, including FBI investigation and polygraphs.
The Espionage Act is found here and here.
For those concerned about wrongful governmental behavior, please note that there is an alternative to criminal leaking: The Intelligence Community Whistleblower Protection Act of 1998 (scroll down almost to the end to find sections 701 and 702).
From the Clinton playbook
28 minutes ago