Protection mechanism

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In computer science, protection mechanisms are built into a computer architecture to support the enforcement of security policies.[1] A simple definition of a security policy is "to set who may use what information in a computer system".[1]

The access matrix model, first introduced in 1971,[2] is a generalized description of operating system protection mechanisms.[3]

The separation of protection and security is a special case of the separation of mechanism and policy.[4]


  1. ^ a b Jones 1975
  2. ^ Lampson 1971
  3. ^ Landwehr 1981
  4. ^ Wulf 74 pp. 337–345