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CISSP® All-in-One Exam Guide by Shon Harris

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Compartmented Security Mode

Our system has various classifications of data, and each individual has the clearance to access all of the data, but not necessarily the need to know.

A system is operating in compartmented security mode when all users have the clearance to access all the information processed by the system in a system high-security configuration, but might not have the need to know and formal access approval. This means that if the system is holding secret and top-secret data, all users must have at least a top-secret clearance to gain access to this system. This is how compartmented and multilevel security modes are different. Both modes require the user to have a valid need to know, NDA, and formal approval, but compartmented security ...

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