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This security model uses an access matrix and defines a "No read up", "No write down" policy.
The Brewer and Nash model
The Biba Security model
The Bell-LaPadula model
The Clark-Wilson model
The Bell-LaPadula model focuses on data confidentiality and controlled access to classified information. The Simple Security Property states that a subject at a given security level may not read an object at a higher security level (no read-up). A subject at a given security level must not write to any object at a lower security level (no write-down), also known as the Star-property.)))))Selected topics[edit] Access control list (ACL) Bell–LaPadula model Biba model Brewer and Nash model Capability-based security Clark-Wilson model Context-based access control (CBAC) Graham-Denning model Harrison-Ruzzo-Ullman (HRU) High-water mark (computer security) Lattice-based access control (LBAC) Mandatory access control (MAC) Multi-level security (MLS) Non-interference (security) Object-capability model Protection ring Role-based access control (RBAC) Take-grant protection model Discretionary access control (DAC)
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