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NIST CSF 2.0
Browse NIST CSF 2.0
PR.AA-01: Identity and Credential Management
PR.AA-02: Identity Binding to Credentials
PR.AA-03: Authentication
PR.AA-04: Identity Assertions
PR.AA-05: Access Authorizations
PR.AA-06: Physical Access
Access Authorizations
PR.AA-05: Access permissions, entitlements, and authorizations are defined in a policy, managed, enforced, and reviewed, and incorporate the principles of least privilege and separation of duties
  • Ex1:  Review logical and physical access privileges periodically and whenever someone changes roles or leaves the organization, and promptly rescind privileges that are no longer needed
  • Ex2:  Take attributes of the requester and the requested resource into account for authorization decisions (e.g., geolocation, day/time, requester endpoint’s cyber health)
  • Ex3:  Restrict access and privileges to the minimum necessary (e.g., zero trust architecture)
  • Ex4:  Periodically review the privileges associated with critical business functions to confirm proper separation of duties
Tier
Not Applicable - Not applicable
No - The outcome(s) have not been meaningfully implemented.
Tier 1: Partial - Application of the organizational cybersecurity risk strategy is managed in an ad hoc manner. Prioritization is ad hoc and not formally based on objectives or threat environment.
Tier 2: Risk Informed - Risk management practices are approved by management but may not be established as organization-wide policy. The prioritization of cybersecurity activities and protection needs is directly informed by organizational risk objectives, the threat environment, or business/mission requirements.
Tier 3: Repeatable - The organization’s risk management practices are formally approved and expressed as policy. Risk-informed policies, processes, and procedures are defined, implemented as intended, and reviewed. Organizational cybersecurity practices are regularly updated based on the application of risk management processes to changes in business/mission requirements, threats, and technological landscape.
Tier 4: Adaptive - There is an organization-wide approach to managing cybersecurity risks that uses risk-informed policies, processes, and procedures to address potential cybersecurity events.
Description

Access permissions, entitlements, and authorizations are defined in a policy, managed, enforced, and reviewed, and incorporate the principles of least privilege and separation of duties