Which security model is built around the principle 'no read up, no write down'?
A CISSP practice question covering Domain 3: Security Architecture and Engineering. Try answering before reading the explanation below.
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Why "Bell-LaPadula" is the right answer
Bell-LaPadula focuses on confidentiality with the simple security property (no read up) and the *-property (no write down). Biba is the integrity counterpart with no read down / no write up. Clark-Wilson uses well-formed transactions; Brewer-Nash is the Chinese Wall model for conflict-of-interest separation.
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