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Sensitive Compartmented Information
Sensitive compartmented information (SCI) is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems established by the Director of National Intelligence.〔ICD 1, p. 22〕Although some sources refer to SCI control systems as special access programs, the intelligence community itself considers SCI and SAPs distinct kinds of controlled access programs.〔DCID 3/29〕
SCI is not a classification. SCI clearance has sometimes been called "above Top Secret,"〔Robert S. McNamara, quoted in Richelson, The Intelligence Community, p. 511〕 but information at any classification level may exist within an SCI control system. When "decompartmented," this information is treated the same as collateral information at the same classification level.
== Access ==
Eligibility for access to SCI is determined by a Single Scope Background Investigation (SSBI) or periodic reinvestigation.〔ICPG 704.1〕 Because the same investigation is used to grant Top Secret security clearances, the two are often written together as TS/SCI. Eligibility alone does not confer access to any specific SCI material; it is simply a qualification. One must receive explicit permission to access an SCI control system or compartment. This process may include a polygraph or other approved investigative or adjudicative action.〔ICD 1, p. 9〕
Once it is determined a person should have access to an SCI compartment, they sign a nondisclosure agreement, are "read in" or indoctrinated, and the fact of this access is recorded in a local access register or in a computer database. Upon termination from a particular compartment, the employee again signs the nondisclosure agreement.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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