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For this subsection we discuss in depth the main integrity modules of the day. We begin with Bell & LaPadula confidentiality module as an assured component for the CISSP exam. We'll discuss its three (3) property rules, what access and permissions they grant to users, the Biba Integrity module and how that trust life cycle works, and finally the Clark-Wilson Integrity module understanding what its basic premises and how that plays into user access of network resources.