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What is this referred to as?

George has a security clearance level higher than Donald. He has access to many devices and data that Donald doesnt have access to. In addition, George is not permitted to write or change data that is at a lower security clearance (data that Donald has access to). What is this referred to as?

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A.
Simple security rule

B.
*-property rule

C.
Invocation property rule

D.
Need-to-know principle

Explanation:
Two core principles within the Bell-LaPadula model are the simple
security rule (no read up) and the *-property rule (no write down).


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