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Intelligence-gathering by interception of signals
Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications
Signals_intelligence
U.A.E. signals intelligence organization
The Signals Intelligence Agency (SIA), formerly known as the National Electronic Security Authority (NESA), is the United Arab Emirates intelligence agency
Signals_Intelligence_Agency
Anglosphere intelligence alliance
treaty for joint cooperation in signals intelligence. Informally, "Five Eyes" can refer to the group of intelligence agencies of these countries. The
Five_Eyes
Australian signals intelligence agency
Australian Signals Directorate (ASD), formerly the Defence Signals Directorate, is a statutory agency of the Government of Australia responsible for signals intelligence
Australian Signals Directorate
Australian_Signals_Directorate
United States Army Special Operations team
A SOT-A (Special Operations Team-Alpha) is a signals intelligence–electronic warfare (SIGINT-EW) element of the United States Army Special Forces. They
SOT-A
Type of technology discipline concerning threat data
Threat Intelligence Platform (TIP) is an emerging technology discipline that helps organizations aggregate, correlate, and analyze threat data from multiple
Threat_Intelligence_Platform
Government organisations in the UK
significant intelligence triumph for Britain during World War I, and one of the earliest occasions on which a piece of signals intelligence influenced
British_intelligence_agencies
Volume of intercepted communication
Chatter is a signals intelligence term, referring to the volume (quantity) of intercepted communications. Intelligence officials, not having better metrics
Chatter (signals intelligence)
Chatter_(signals_intelligence)
Royal Air Force base in Yorkshire, England
Defense. The site was considered by the US as suitable for gathering signals intelligence from the northern parts of Western Europe and Eastern Europe, specifically
RAF_Menwith_Hill
Foreign instrumentation signals intelligence, FISINT (Foreign Instrumentation Signature INTelligence) is intelligence from the interception of foreign
Foreign instrumentation signals intelligence
Foreign_instrumentation_signals_intelligence
Data that is useful in detecting or predicting cyberattacks
(victim selection and geopolitical alignment), and intelligence from human sources or signals intelligence. However, attribution is inherently difficult and
Cyber_threat_intelligence
Intelligence gathered through interpersonal contact
technical intelligence-gathering disciplines, such as signals intelligence (SIGINT), imagery intelligence (IMINT) and measurement and signature intelligence (MASINT)
Human intelligence (intelligence gathering)
Human_intelligence_(intelligence_gathering)
spoofing of signals, as shown at Chancellorsville. Signals intelligence became far more central to military (and to some extent diplomatic) intelligence generally
Signals intelligence in modern history
Signals_intelligence_in_modern_history
Ostensible identity in an infiltrated organization assumed by a covert agent
A cover in foreign, military or police human intelligence or counterintelligence is the ostensible identity and role or position in an infiltrated organization
Cover (intelligence gathering)
Cover_(intelligence_gathering)
from electronic signals that do not contain speech or text (which are considered COMINT) Foreign instrumentation signals intelligence (FISINT) – entails
List of intelligence gathering disciplines
List_of_intelligence_gathering_disciplines
United States Army Special Operations unit
tradecraft, weapons handling, hand-to-hand combat, signals intelligence, etc. Other Intelligence-based special operations units: 13th Parachute Dragoon
Intelligence_Support_Activity
Signals intelligence operational platforms are employed by nations to collect signals intelligence, which is intelligence-gathering by interception of
Signals intelligence operational platforms by nation
Signals_intelligence_operational_platforms_by_nation
Australian Security Intelligence Organisation (ASIO) Department of Defence Defence Intelligence Organisation (DIO) Australian Signals Directorate (ASD)
List_of_intelligence_agencies
U.S. signals intelligence organization
information and data for intelligence and counterintelligence purposes, specializing in a discipline known as signals intelligence (SIGINT). The NSA is also
National_Security_Agency
Military doctrinal concept
ISTAR stands for intelligence, surveillance, target acquisition, and reconnaissance. In its macroscopic sense, ISTAR is a practice that links several battlefield
Intelligence, surveillance, target acquisition, and reconnaissance
Intelligence,_surveillance,_target_acquisition,_and_reconnaissance
Security agencies of the Australian Government
products. The Australian Signals Directorate (ASD) is responsible for collection, analysis and distribution of foreign signals intelligence and is the national
Australian intelligence community
Australian_intelligence_community
allies began a rapid drawdown of military forces, including those of signals intelligence. At the time, the US still had a COMINT organization split between
US signals intelligence in the Cold War
US_signals_intelligence_in_the_Cold_War
U.S. Army direct reporting unit
to the National Security Agency (NSA), the United States' unified signals intelligence (SIGINT) organization. Within the NSA, INSCOM and its counterparts
United States Army Intelligence and Security Command
United_States_Army_Intelligence_and_Security_Command
Communications arm of the British Army
Corps of Signals (often simply known as the Royal Signals – abbreviated to R SIGNALS) is one of the combat support arms of the British Army. Signals units
Royal_Corps_of_Signals
Codebreaking division of the United States Army during WW2
Eritrea Signals intelligence OP-20-G United States Coast Guard Unit 387 National Defence Radio Establishment Central Bureau Signal Intelligence Service
Signal_Intelligence_Service
Agency dealing with secret intelligence
An intelligence agency is a government agency responsible for the collection, analysis, and exploitation of information in support of law enforcement,
Intelligence_agency
Directorate of Military Intelligence, Directorate of Air Intelligence and the Directorate of Naval Intelligence. The Signals Intelligence Directorate is a joint
Indian_Intelligence_Community
Information on military opponents' location
geospatial intelligence (GEOINT) is intelligence about the human activity on Earth derived from the exploitation and analysis of imagery, signals, or signatures
Geospatial_intelligence
Stages of intelligence information processing
(imagery intelligence), ELINT (electronic intelligence), SIGINT (Signals Intelligence), OSINT (open source, or publicly available intelligence), etc. Once
Intelligence_cycle
and decryption of radio signals. The British rapidly built up great expertise in the newly emerging field of signals intelligence and codebreaking. In 1911
History_of_espionage
Signals intelligence by alliances, nations and industries comprises signals intelligence (SIGINT) gathering activities by national and non-national entities;
Signals intelligence by alliances, nations and industries
Signals_intelligence_by_alliances,_nations_and_industries
Australian intelligence chief
an intelligence, security and technology professional, in both the public and private sectors. Burgess joined ASD (then called the Defence Signals Directorate)
Mike Burgess (intelligence chief)
Mike_Burgess_(intelligence_chief)
Former US military facility in Hawaii
pronounced "Kay-ARSock"), also known as the Kunia Tunnel or the Regional Signals Intelligence Operations Center Kunia, was a United States National Security Agency
Kunia Regional SIGINT Operations Center
Kunia_Regional_SIGINT_Operations_Center
United States Army Positions
Geospatial Intelligence Imagery Analyst 35L Counterintelligence Special Agent 35M Human Intelligence Collector 35N Signals Intelligence Analyst 35P Signals Intelligence
List of United States Army careers
List_of_United_States_Army_careers
Japanese military and signals intelligence agency
The Defense Intelligence Headquarters (情報本部, Jōhōhonbu) is a military intelligence and signal intelligence agency of the Japanese government, under the
Defense Intelligence Headquarters
Defense_Intelligence_Headquarters
Multilateral signals intelligence treaty signed in 1946
cooperation in signals intelligence between Australia, Canada, New Zealand, the United Kingdom, and the United States. The alliance of intelligence operations
UKUSA_Agreement
Ukrainian war technology during Russo-Ukrainian war
types: Signals intelligence (Ukrainian: Засоби радіоелектронної розвідки) systems are designed to detect and analyze enemy combatant signals. SI is very
Ukraine and electronic warfare
Ukraine_and_electronic_warfare
Clandestine acquisition of confidential information
(OSINT) One-way voice link Sabotage Safe house Side channel attack Signals intelligence (SIGINT) Spy ship Steganography Surveillance Surveillance aircraft
Espionage
Russian military intelligence agency
cover, and "illegal" officers without cover. It also maintained a signals intelligence (SIGINT) station in Lourdes, Cuba and other Soviet-bloc countries
GRU_(Russian_Federation)
Intelligence agency of the United Kingdom
Intelligence from other organisations such as SIS and GCHQ, which focus on the collection of 'single-source' Human Intelligence (HUMINT) and Signals Intelligence
Defence_Intelligence
Data collected from publicly available sources to be used in an intelligence context
Open-source intelligence (OSINT) is the collection and analysis of data gathered from open sources (overt sources and publicly available information) to
Open-source_intelligence
Intelligence gathered by means of imagery
incident. Unmanned aerial vehicles have been developed for imagery and signals intelligence. These drones are a force multiplier by giving the battlefield commander
Imagery_intelligence
Technical branch of intelligence gathering
intelligence analysis management, since certain aspects of MASINT, such as the analysis of electromagnetic radiation received by signals intelligence
Measurement and signature intelligence
Measurement_and_signature_intelligence
Turkish Stealth UAV
integrated with artificial intelligence (AI). Additionally, the aircraft is also equipped for electronic warfare (EW), signals intelligence (SIGINT) and deep strike
TAI_Anka-3
Offensive measures using enemy information
(counter-intelligence) and its primary subfield, counterespionage (counter-espionage), are activities aimed at protecting an agency's intelligence program
Counterintelligence
Turkish signals intelligence gathering vessel
TCG Ufuk (A-591) is a signals intelligence gathering vessel of the Turkish Navy. It was built as part of the MILGEM project, featuring an Ada-class corvette
TCG_Ufuk
Foreign intelligence agency of Pakistan
The Inter-Services Intelligence (ISI) is the foreign intelligence agency of Pakistan. It is responsible for counterintelligence, espionage and conducting
Inter-Services_Intelligence
Type of spy
spy (espionage agent) who is recruited before having access to secret intelligence, subsequently managing to get into the target organization. However,
Mole_(espionage)
Peace camp in Northern Territory, Australia
Gap, a joint Australian–United States satellite communications and signals intelligence surveillance base just outside of Alice Springs, Australia, in November
Pine_Gap_Women's_Peace_Camp
Form of surveillance, such as wiretapping
democratic oversight of signals intelligence agencies, European Commission for Democracy Through Law The key to intelligence reform in Germany: Strengthening
Targeted_surveillance
Effort to find civilizations not from Earth
extraterrestrial intelligence (usually shortened as SETI) is the diverse efforts and scientific projects intended to detect extraterrestrial signals, or any evidence
Search for extraterrestrial intelligence
Search_for_extraterrestrial_intelligence
Military unit
become signals intelligence and firefighting professionals for the U.S. Army. The 344th MI Bn is subordinate to the 111th Military Intelligence Brigade
344th Military Intelligence Battalion
344th_Military_Intelligence_Battalion
Military unit
adjacent to the former Medina National Stockpile Site. TCC conducts signals intelligence, cyberwarfare operations and cybersecurity operations. The TCC site
Texas_Cryptologic_Center
U.S. government AI system
reconnaissance satellites without human input. Using multimodal intelligence data—from imagery and signals to communications and environmental feeds—Sentient is
Sentient (intelligence analysis system)
Sentient_(intelligence_analysis_system)
British Army employment specialisations
The Royal Signals trades are the employment specialisations of the Royal Corps of Signals in the British Army. Every soldier in the Corps is trained both
Royal_Signals_trades
Person employed by an organization to collect, compile and/or analyze information
Communications intelligence (COMINT) Eavesdropping and interception of communications (e.g., by wiretapping) including signals intelligence (SIGINT) and
Intelligence_officer
Spy management
In intelligence organizations, agent handling is the management of so-called agents (called secret agents or spies in common parlance), principal agents
Agent_handling
Signals intelligence collection and analysis network
originally a secret government code name, is a surveillance program (signals intelligence/SIGINT collection and analysis network) operated by the five signatory
ECHELON
Special forces communications unit of the British Army
Communications and Information Systems (CIS), Electronic Warfare (EW) and Signals Intelligence (SIGINT) support, to the United Kingdom Special Forces (UKSF). The
18th_(UKSF)_Signal_Regiment
List of Job Opportunities Within the United States Marine Corps
Linguist - GySgt–Pvt 2691 Signals Intelligence/Electronic Warfare (SIGINT/EW) Chief – MGySgt-MSgt Officer 2602 Signals Intelligence/Electronic Warfare (SIGINT/EW)
List of United States Marine Corps MOS
List_of_United_States_Marine_Corps_MOS
Term used by the United States National Security Agency (NSA)
in signals intelligence (SIGINT) capabilities between the US and the rest of the world. Critics believe that this approach to signals intelligence poses
NOBUS
Military unit
range of advanced intelligence collection and analysis that includes human intelligence, counterintelligence, aerial signals intelligence, and Tactical Exploitation
525th Military Intelligence Brigade
525th_Military_Intelligence_Brigade
Cancelled British spy satellite
Zircon was the codename for a British signals intelligence satellite, designed to intercept radio and other signals from the USSR, Europe and other areas
Zircon_(satellite)
Agency within the Ministry of Defence of India
controls the Indian Armed Forces' technical intelligence assets – the Directorate of Signals Intelligence, a tri-service agency, and the Defence Image
Defence Intelligence Agency (India)
Defence_Intelligence_Agency_(India)
Information about military opponents
Military intelligence is a military discipline that uses information collection and analysis approaches to provide guidance and direction to assist commanders
Military_intelligence
British signals intelligence agency
Communications Headquarters (GCHQ) is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance
GCHQ
Intelligence that is required for forming national-level policy and military plans
comes from Open Source Intelligence. Other sources include traditional HUMINT (especially in recent years), Signals intelligence including ELINT, MASINT
Strategic_intelligence
Topics referred to by the same term
Mithila region of the Indian subcontinent Defense Intelligence Headquarters, the official signals intelligence agency of the Japanese government Diamond Hill
DIH
Aircraft designed to observe enemy forces and facilities
collection of imagery intelligence (including using photography), signals intelligence, as well as measurement and signature intelligence. Modern technology
Reconnaissance_aircraft
Airspace violation and shootdown incident
showed antennas that likely were used for collecting and transmitting signals intelligence. A publicly released U.S. State Department document, after the balloon
2023_Chinese_balloon_incident
Former British intelligence agency
British signals intelligence agency set up in 1919. During the First World War, the British Army and Royal Navy had separate signals intelligence agencies
Government Code and Cypher School
Government_Code_and_Cypher_School
Weather station and military facility in Nunavut, Canada
serving three- to six-month tours of duty there. They staff a military signals intelligence radio receiving facility at Canadian Forces Station Alert (CFS Alert
Alert,_Nunavut
Former U.S. intelligence official and cryptoanalyst; whistleblower (born 1943)
where he served as Technical Director for intelligence. Binney co-developed ThinThread, a signals intelligence collection program with built-in privacy
William Binney (intelligence official)
William_Binney_(intelligence_official)
British military facility
was a signals intelligence station in the Siu Sai Wan area of Hong Kong. The station was established by the Royal Air Force as base for 367 Signals Unit
RAF_Little_Sai_Wan
Organisation
A private intelligence agency (PIA) is a private sector (non-governmental) or quasi-non-government organization devoted to the collection, analysis, and
Private_intelligence_agency
Turkish electronic warfare aircraft
features radar and communications jamming equipment, as well as signals intelligence for assessing the effectiveness of jamming. The modification of the
Hava_SOJ
Australian domestic intelligence agency
entity of the Australian Intelligence Community. ASIO has a wide range of surveillance powers to collect human and signals intelligence. Generally, ASIO operations
Australian Security Intelligence Organisation
Australian_Security_Intelligence_Organisation
Intelligence unit of the Israel Defense Forces
is an Israeli Intelligence Corps unit of the Israel Defense Forces responsible for clandestine operation, collecting signal intelligence (SIGINT) and code
Unit_8200
Military unit
Intelligence Brigade, a subordinate unit of the U.S. Army Intelligence and Security Command, conducts synchronized full-spectrum signals intelligence
704th Military Intelligence Brigade
704th_Military_Intelligence_Brigade
Signals intelligence-gathering facility in Northern Territory, Australia
Shoal Bay Receiving Station is a signals intelligence-gathering facility in the Northern Territory of Australia located on the shores of Shoal Bay about
Shoal_Bay_Receiving_Station
Unintended consequence of covert operations, typically involving rogue terrorist groups
without a discernible, direct cause; because the public—in whose name the intelligence agency acted—are unaware of the effected secret attacks that provoked
Blowback_(intelligence)
Committee investigating governmental abuses in the US intelligence community
traffic with the NSA, and officially confirmed the existence of this signals intelligence agency to the public for the first time. By the early years of the
Church_Committee
Pakistan Army training formation on signals & computers
education and training on the signal intelligence in 1947 in Rawalpindi. Originally, it was established as "Army School of Signals" which was mandated with
Military_College_of_Signals
US Navy ship class
classified as environmental research ships, they were actually used for signals intelligence gathering, as part of the AGER program. In 1964 the Department of
Banner-class environmental research ship
Banner-class_environmental_research_ship
Iranian signals intelligence ship
SIGINT Intelligence Vessel, "Zagros 313"". Archived from the original on 2025-08-13. Retrieved 2025-05-06. Iran's navy unveils its first signals intelligence
IRIS_Zagros
Soviet spy centre in Cuba
The Lourdes SIGINT (Signals Intelligence) facility, located near Havana, Cuba, was the largest facility of its kind operated by Soviet and later Russian
Lourdes_SIGINT_station
Spy in place with no immediate mission
"Terms & Definitions of Interest for DoD CI Professionals" (PDF). Defense Intelligence Agency. May 2, 2011. p. GL-157. Archived (PDF) from the original on June
Sleeper_agent
Information as knowledge of the enemy
Intelligence, or intel, can be information or knowledge about anyone or anything considered contrary to the modus operandi of an organizational entity
Intelligence_(information)
German signals intelligence organization from 1941–1945
basic element of the field organisation of the German Army (Heer) signals intelligence organization (first called Inspectorate 7/VI, then LNA, and finally
Signal Intelligence Regiment (KONA)
Signal_Intelligence_Regiment_(KONA)
Intelligence alliance comprising Denmark, France, Germany, the Netherlands, and Sweden
American CIA. The motives for the alliance were twofold: cooperation on signals intelligence via satellites and cooperation on technical interception challenges
Maximator (intelligence alliance)
Maximator_(intelligence_alliance)
European tactical military transport aircraft
effectively. These include parachute and cargo dropping, electronic signals intelligence (ELINT), medical evacuation (MEDEVAC), and maritime patrol. Some
Airbus_C295
Combined intelligence agency of the Finnish military
Försvarsmaktens underrättelsetjänst) is the combined signals (SIGINT), geospatial (GEOINT) and imagery intelligence (IMINT) agency of the Finnish Defence Forces
Finnish Defence Intelligence Agency
Finnish_Defence_Intelligence_Agency
American intelligence operative
is a former Signals Intelligence (SIGINT) director at the National Security Agency (NSA), and executive assistant director of intelligence at the Federal
Maureen_Baginski
US intelligence agency in charge of satellite intelligence
intelligence to several government agencies, particularly signals intelligence (SIGINT) to the National Security Agency (NSA), imagery intelligence (IMINT)
National Reconnaissance Office
National_Reconnaissance_Office
Joint Australia–United States base near Alice Springs, Australia
is a joint Australian–United States satellite communications and signals intelligence surveillance base and Australian Earth station approximately 18 km
Pine_Gap
British foreign intelligence agency
The Secret Intelligence Service (SIS), commonly known as MI6 (Military Intelligence, Section 6), is the foreign intelligence service of the United Kingdom
MI6
Evaluation of sensitive state, military, commercial, or scientific information
Intelligence assessment is a specific phase of the intelligence cycle which oversees the development of behavior forecasts or recommended courses of action
Intelligence_assessment
Foreign intelligence agency of Germany
The Federal Intelligence Service (German: Bundesnachrichtendienst, pronounced [ˌbʊndəsˈnaːχʁɪçtnˌdiːnst] ; BND) is the foreign intelligence agency of Germany
Federal_Intelligence_Service
Swedish signals intelligence gathering vessel
is a signals intelligence gathering vessel currently in service for the Swedish Navy. The ship is to replace Sweden's only signals intelligence vessel
HSwMS_Artemis
WWII code-breaking site
15: SIXTA (Signals Intelligence and Traffic Analysis). Hut 16: ISK (Intelligence Service Knox) Abwehr ciphers. Hut 18: ISOS (Intelligence Section Oliver
Bletchley_Park
SIGNALS INTELLIGENCE
SIGNALS INTELLIGENCE
Male
Dutch
, fiery.
Boy/Male
Indian
Signal, Guidance, Guiding hand
Boy/Male
Hindu, Indian, Kannada, Tamil, Telugu
Brilliant; Signal; Symbol
Boy/Male
German
Victory Protector; Victorious Ruler
Boy/Male
Hindu, Indian
Monk; Signal
Boy/Male
Arabic
Signal; Hint
Girl/Female
Latin
Sign.
Female
Hebrew
(סִיגָל) Hebrew name SIGAL means "treasure."
Girl/Female
Swedish
Victorious.
Surname or Lastname
English (Lancashire)
English (Lancashire) : habitational name from Wignal, a minor place near Holmes in the parish of Croston, so named from the genitive case of the Old English byname Wicga (see Wigley) + Old English h(e)alh ‘nook’, ‘corner’, ‘recess’.
Boy/Male
Hindu
Signal, Goal
Boy/Male
Tamil
Signal, Goal
Boy/Male
Arabic, Hindu, Indian, Kannada, Muslim
Signal; Guidance; Direction
Boy/Male
Tamil
Signal, Goal
Boy/Male
Hindu
Signal, Goal
Girl/Female
Danish, German, Latin, Scandinavian, Swedish
Sign; Signal; Victory
Boy/Male
Indian, Telugu
Interest
Boy/Male
German
Victorious ruler.
Boy/Male
Gujarati, Hindu, Indian, Jain, Kannada, Malayalam, Marathi, Sanskrit, Telugu
Indication; Signal; Hint
Boy/Male
German
Victorious ruler.
SIGNALS INTELLIGENCE
SIGNALS INTELLIGENCE
Boy/Male
Italian Spanish American English French
Mountain. Abbreviation of Montague and Montgomery.
Boy/Male
Arabic
Prophet Name
Boy/Male
Arabic, Farsi, German, Iranian, Muslim, Parsi
First King of Iran
Girl/Female
Tamil
King, Guardian, Moment
Boy/Male
Arabic
Hope
Girl/Female
Indian
To humm
Boy/Male
Hindu
Boy/Male
Hindu
Anxiely, Godess Laxmi
Surname or Lastname
English (Yorkshire)
English (Yorkshire) : apparently a habitational name from a lost or unidentified place.
Boy/Male
British, English, German
A Compound of the Words Giant and Peace; From the Old English Name Hunfrith; Peace; Diminutive of Humphrey
SIGNALS INTELLIGENCE
SIGNALS INTELLIGENCE
SIGNALS INTELLIGENCE
SIGNALS INTELLIGENCE
SIGNALS INTELLIGENCE
a.
Of or pertaining to signals, or the use of signals in conveying information; as, a signal flag or officer.
n.
One who signs or subscribes his name; as, a memorial with a hundred signers.
a.
Suitable to be signed; requiring signature; as, a legal document signable by a particular person.
a.
Noticeable; distinguished from what is ordinary; eminent; remarkable; memorable; as, a signal exploit; a signal service; a signal act of benevolence.
adv.
In a signal manner; eminently.
n.
A signal telegraph; an apparatus for giving signals by the disposition of lanterns, flags, oscillating arms, etc.
n.
Signal; order; command; direction.
n.
A sign made for the purpose of giving notice to a person of some occurence, command, or danger; also, a sign, event, or watchword, which has been agreed upon as the occasion of concerted action.
a.
Of or pertaining to the science of signs, or the systematic use of signs; as, a semeiological classification of the signs or symptoms of disease; a semeiological arrangement of signs used as signals.
n.
One who makes signals with a flag.
v. t.
To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor.
a.
Of or pertaining to precaution, or precautions; as, precautionary signals.
n.
A token; an indication; a foreshadowing; a sign.
n.
One who makes signals; one who communicates intelligence by means of signals.
v. t.
To communicate by signals; as, to signal orders.
v. i.
To make a sign or signal; to communicate directions or intelligence by signs.
p. pr. & vb. n.
of Signal
a.
Mutually contrived or planned; agreed on; as, concerted schemes, signals.
/
or Signalled (imp. & p. p.) of Signal