Single Scope Background Investigation
Overview
A Single Scope Background Investigation (SSBI) is a type of United States security clearance
Security clearance
A security clearance is a status granted to individuals allowing them access to classified information, i.e., state secrets, or to restricted areas after completion of a thorough background check. The term "security clearance" is also sometimes used in private organizations that have a formal...

 investigation required for Top Secret
Top Secret
Top Secret generally refers to the highest acknowledged level of classified information.Top Secret may also refer to:- Film and television :* Top Secret , a British comedy directed by Mario Zampi...

, SCI
Sensitive Compartmented Information
Sensitive compartmented information 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...

 and Q
Q clearance
Q clearance is a United States Department of Energy security clearance equivalent to a United States Department of Defense Top Secret clearance and Critical Nuclear Weapon Design Information . DOE clearances apply for access specifically relating to atomic or nuclear related materials...

 access, and involves agents contacting employers, coworkers and other individuals. Standard elements include background check
Background check
A background check or background investigation is the process of looking up and compiling criminal records, commercial records and financial records of an individual....

s involving checks of employment, education, organization affiliations, local agencies, where the subject has lived, worked, or gone to school, and interviews with persons who know the individual.
 
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