Words, Terms and Codes
Here is a reference
resource for all those spy codes and covert talk.
| A | B
| C | D
| E | F
| G | H
| I | J
| K | L
| M | N
| O | PQ
| R | S
| T | UV
- FALN –
an underground group in Puerto Rico.
- FALSE FLAG
RECRUITMENT – impersonation by a
spy while recruiting an informant, defector, agent, etc.
- FBI –
a US security service.
- FDS –
One of Mexico's security services.
- FIBONACCI SYSTEM
– a system of non-carrying addition used for
one-time pad codes. For example, (Fib) 999 + 222 = 111.
- FILLING –
the act of inserting material in a dead drop.
& SEALS - the tradecraft involved when making
surreptitious openings and closings of envelopes, seals, and
- FLIP –
a U Turn made by the target during a vehicle surveillance
person used one-time, occasionally, or even unknowingly for an
- FLOATING BOX
– a method of surveillance where a team of
operators establishes a containment box around the target
wherever he/she goes.
- FMLN –
Frente Farabundo Marti para Liberacion Nacional, an
underground group in El Salvador.
FOLLOW – a surveillance team is executing a follow
when they are shadowing a moving target. See also FLOATING
BOX. A follow begins when the target exits the stakeout box
and a surveillance operative attains command of the target.
See also COMMAND OF THE TARGET.
- FOOTFALL DETECTOR
– vibration sensor designed to detect walking
- FORENSICS -
The use of science and technology to
investigate and establish facts in criminal or civil courts of
FOUR-BAGGER – disclipline of an agent by FBI
headquarters, consisting of censure, transfer, suspension, and
- FRA –
Sweden's military signals intelligence agency.
- FREQUENCY FLOODING
– a technique that allows an ordinary
telephone to become a covert listening device.
- FRIEND –
slang for an agent, informant, or mole providing information
to a handler.
- FRIENDS –
slang for Britain's secret intelligence service, MI.6.
- FRONT –
a legitimate-appearing business created by an intelligence
agency or security service to provide cover for spies and
- FSB –
Russia's federal security service, responsible for
- FUNKSPIEL –
impersonation during electronic communications. Derived from
the German phrase for "radio game".
- FUNNY PAPER
– slang for the counterfeiting and forged
documents section of an intelligence agency or security