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Telephone Security Group

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Overview Edit

The Telephone Security Group (TSG was the primary technical and policy resource in the U.S. Intelligence Community for all aspects of the TSCM (technical surveillance countermeasures) program involving telephone systems.

The charter members of the TSG were: the Department of the Air Force, Department of the Army, Central Intelligence Agency, Defense Intelligence Agency, Department of Energy, Federal Bureau of Investigation, Department of the Navy, National Security Agency, U.S. Secret Service, and Department of State.

Standards Edit

The TSG has issued standards, which contain guidance for providing on-hook security to telephone systems in areas where sensitive government information is discussed. Implementation of TSG standards neither prevents the application of more stringent requirements nor satisfies the requirements of other security programs such as TEMPEST, COMSEC, or OPSEC.

TSG standards discussed in this wiki include:

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