TSCM “represents the convergence of two distinct disciplines — counterintelligence and security countermeasures,” the directive explained. Its purpose is “to detect and nullify a wide variety of technologies used to gain unauthorized access to classified national security information, restricted data, or otherwise sensitive information.”
The directive was released (in a fuzzy, not very well scanned copy) by the ODNI Freedom of Information Act office.
See “Technical Surveillance Countermeasures,” ICD 702, February 18, 2008.
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