The Brewer and Nash Model

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The Brewer and Nash Model:

The Brewer and Nash model has similarities with the Bell-LaPadula model and is also referred to as the Chinese Wall model. This model allows access controls to change dynamically based on a user’s past activity. This model applies to a single integrated database; it seeks to create security domains that are sensitive to the notion of conflict of interest (COI). Data is created with indications of which security domains are potentially in conflict and blocks any subject with access to one domain that belongs to a specific conflict class from accessing any other domain that belongs to the same conflict class.

This structure is based on…

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