DAGGER - Starting in the 1970s, the CIA is rumored to use a quick disguise kit called the “Dagger”, the contents of which reportedly fit into a small paper bag and is rumored to completely transform a person in less than 5 minutes, to the point you could never recognize them. Even today, its exact contents are classified secret.
DAM - France's military intelligence agency.
DANGLE - A person sent by the intelligence agency of his or her own country who approaches an opposite intelligence agency in the hope of being recruited as a spy in order to allow a double agent operation, for the purpose of intelligence collection or disinformation.
DARPA - Defense Advanced Research Projects Agency (USA).
DATA RECOVERY - Euphemism for the back door built into all US encrypting programs.
DCI - The Director of Central Intelligence.
DCSS - Denmark's security service.
DDIS - Denmark's intelligence agency.
DDO - The Deputy Director of Operations of the CIA, and head of all HUMINT operations; formerly the DDP.
DDP - The Deputy Director of Plans (see DDO).
DEAD DROP / DEAD-LETTER BOX - A secret location where materials can be left for another party to retrieve.
DEAD MAN'S SWITCH - A switch that automatically brakes a subway train if the operator's hand relinquishes control of said switch, as in the case of his sudden death. In military operations, it can also launch a nuclear strike if one launch site stops communicating with all the others, and thus is presumed to have been bombed.
DEAD TELEPHONE - A signal or code passed with the telephone without speaking.
DECOY - Subterfuge meant to distracts adversary's attention.
DEEP-COVER AGENT - Agent under permanent cover.
DEFECTOR - A person who has renounced his/her country of citizenship
DEZINFORMATSIYA (Disinformation) - The Soviet and Russian term for Disinformation operations: operations designed to pass false information to the enemy (ex: RT, Sputnik in Russia, and Breitbart, Infowars, Limbaugh and Fox News opinion shows in the US).
DGI - Cuba's intelligence agency.
DGSE - France's intelligence agency.
DHS - Department of Homeland Security - USA agency.
DIA - A US intelligence agency, the Defense Intelligence Agency. This initialism is also used in the same way by Canada, India, New Zealand, Nigeria, South Korea, and with a different meaning by the Italians as the Direzione Investigativa Antimafia, a law-enforcement agency.
DICKINSON, Velvalee - Spy
DIRECTOR - The cable address of CIA Headquarters.
DIRTECH - The headquarters cable address of the Office of Technical Service.
DIRTY TRICKS - Covert sabotage carried out by a security service or intelligence agency, ranging from pranks to assassination.
DISCARD - An agent whom a service will permit to be detected and arrested so as to protect more valuable assets.
DIVERSION - Distracts adversary's attention. Could be a DECOY.
DLB - Acronym for dead-letter box. Also see DEAD DROP / DEAD-LETTER BOX.
DO / DODO - The Directorate of Operations of the CIA and the Directorate of Operations Duty Office, where all espionage communications worldwide are managed from CIA Headquarters.
DOPE BOOK - A notebook kept with a sniper rifle for the purposes of recording the atmospheric conditions, range, lighting, and resulting hit or miss of every shot fired.
DOPPELGANGER - A look-a-like. See also LOOK-A- LIKE
DOUBLE AGENT - A spy who pretends to be working against one country but who is in fact working for that country’s opponent; often a conduit for Disinformation.
DRUMMOND, Nelson - Spy
DRY CLEAN - Actions agents undertake to determine if they are under surveillance.
DRY CLEANING - Active counter surveillance and anti- surveillance against pavement artists and wheel artists.
DREYFUS AFFAIR (THE) - This episode became a prime example of miscarriage of justice, collusion, evidence fabrication and antisemitism. Alfred Dreyfus was falsely convicted of passing secrets to the enemy. Evidence was found that proved him innocent, but the army suppressed it. He spent five years in the Bagne de Cayenne, also known as Devil's Island, an equally brutal and dehumanizing version of Vietnam's Hanoi Hilton which, incidentally, was also established by the French. This affair will be the subject of a future article.
DREYFUS, Alfred - Spy (The Dreyfus Affair)
DS - Bulgaria's security service, the Drzaven Sigurmost.
DSD - Australia's signal intelligence agency, Defence Signals Directorate.
DST - France's security service.
DUBOK - Russian term for a dead- letter box. Also see DEAD DROP.
DUKES, Paul - Spy
DUQUESNE SPY RING (THE) - The largest espionage operation case in the history of the United States that ended in 33 convictions. The FBI uncovered this NAZI spy ring operating within the United States during World War II and was run by Frederick Joubert Duquesne, a South African who became a naturalized American citizen in December 1913. The ring was established in order to gather information that could be used in the event the United States entered the war. It was assigned to find holes in American military forces and preparedness before the United States entered the war and to find ways to destabilize the country and its morale.
DZERZHINSKY SQUARE - Historic site in Moscow of Lubyanka Prison, longtime headquarters of the Soviet security organs, including Cheka, NKVD, and KGB and now the FSB, successor of the KGB. Underground corridors are rumored to have led from the Cellar to an industrial sized meat grinder connected to the Moscow sewers to get rid of the bodies. A 15-ton iron monument of Dzerzhinsky was moved to the Fallen Monument Park, replaced by a memorial to the victims of the Gulag. (See CELLAR)