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   Signals intelligence

   Signals intelligence (often contracted to SIGINT) is intelligence-gathering by interception of signals, whether between people (i.e., COMINT or communications intelligence) or between machines (i.e., ELINT or electronic intelligence), or mixtures of the two.
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   Signals intelligence operational platforms by nation

   See Signals intelligence by alliances, nations and industries for the organization of SIGINT activities, and for context, see Signals intelligence in modern history.
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   Category:Signals intelligence

   Signals intelligence Intelligence gathering disciplines
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   Signals intelligence in modern history

   See Signals intelligence by alliances, nations and industries for the organization of signals intelligence activities.
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   Intelligence (information gathering)

   Federal Agency of Government Communications and Information - Federalnoye Agentstvo Pravitelstvennoy Svyazi i Informatsiyi (FAPSI) - signals intelligence organ
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   National Security Agency

   Created on November 4, 1952 by President Truman, it is responsible for the collection and analysis of foreign communications and foreign signals intelligence, which involves a significant amount of cryptanalysis.
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   Signals intelligence by alliances, nations and industries

   It also describes the major vendors, who are often multinational. Since specific equipment is often used by multiple nations, see the platform descriptions in the main article.
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   List of intelligence agencies

   Viestikoelaitos (VKoeL) (Finnish Intelligence Research Establishment, literally Signals Test Facility), the signals intelligence agency of the Finnish Army
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   Foreign instrumentation signals intelligence

   In telecommunication, the term foreign instrumentation signals intelligence (FISINT) has the following meanings:
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    Government Communications Security Bureau

    In the 1980s, however, information was gradually released, first about the GCSB's security role, and then about its signals intelligence operations.

Explore the following pages on Powerset:

• Signals intelligence,
• Signals intelligence operational platforms by nation,
• Category:Signals intelligence,
• Signals intelligence in modern history,
• Intelligence (information gathering),
• National Security Agency,
• Signals intelligence by alliances, nations and industries,
• List of intelligence agencies,
• Foreign instrumentation signals intelligence,
• Government Communications Security Bureau