Signals intelligence by alliances, nations and industries

Signals Intelligence By Alliances, Nations And Industries

Signals intelligence by alliances, nations and industries

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:For the unifying conceptual and technical factors in this intelligence discipline, see Signals intelligence. For specific collection platforms, see SIGINT Operational Platforms by Nation for current collection systems, and for context, see SIGINT in Modern History. For a complete hierarchical list of related articles, see the intelligence cycle management hierarchy.

Multilateral SIGINT

Many organizations, national or not, are responsible for communications security as well as SIGINT; the organization makes codes and ciphers that it hopes opponents cannot break. There is a synergy between the two components; there is a saying among cryptologists that no one is qualified to create a cipher unless they have successfully cryptanalyzed a cipher of equivalent complexity.

Many US and allied SIGINT activities are considered Sensitive Compartmented Intelligence, and carry the special security marking, "HANDLE THROUGH COMINT CHANNELS ONLY", which is abbreviated as a suffix to the security classification. SECRET SIGINT material would be marked (S-CCO). For exceptionally sensitive TOP SECRET material, there might be an additional codeword, such as (TS-CCO-RABID).

UKUSA Agreement

SIGINT and security procedures are closely coordinated under what is called the UKUSA Community, which includes Australia, Canada, New Zealand, the United Kingdom, and the United States. It is widely rumored that those five nations cooperate in a major SIGINT activity codenamed ECHELON. Of...
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