Threat by a defendant in a trial to expose intelligence activities or other classified information if prosecuted.

Honey Trap

Slang for use of men or women in sexual situations to intimidate or snare others. This use of sex to trap or blackmail an individual is standard practice in intelligence operations.

Scytale

Earliest known device for cryptology. Invented by the Spartans, it consisted of letters written on a strip of cloth or leather in an apparently random manner, with the coded message hidden by superfluous letters. It revealed a message when wrapped around a rod or staff of a specific size.