Access control list (ACL)   A list of rules that control the manner in which a resource may be accessed.

Accreditation   The formal acceptance of the adequacy of a system’s overall security and functionality by management.

Administrative control   Security mechanisms implemented by management primarily through policies and procedures; also known as a management or policy control.

Advanced persistent threat (APT)   The name given to any number of stealthy and continuous computer-hacking efforts, often coordinated and executed by an organization or government with significant resources over a longer period of time.

Anomaly analysis   Any technique focused on measuring the deviation of some observation from some baseline and determining ...

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