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In [[computer security]], '''lattice-based access control''' ('''LBAC''') is a complex [[access control]] model based on the interaction between any combination of '''objects''' (such as resources, computers, and applications) and '''subjects''' (such as individuals, groups or organizations).
In this type of label-based [[mandatory access control]] model, a [[lattice (order)|lattice]] is used to define the levels of security that an object may have and that a subject may have access to. The subject is only allowed to access an object if the security level of the subject is greater than or equal to that of the object.
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