Office of the Director of National Intelligence, Intelligence Community Directive 702: Technical Surveillance Countermeasures (Feb. 18, 2008) (full-text).
This Directive describes technical surveillance countermeasures (TSCM) that "represents the convergence of two distinct disciplines — counterintelligence and security countermeasures." 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."
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