authorization-security

RBAC with policy enforcement uses role hierarchies and policy decision points (PDPs) to control resource access. Define roles, assign permissions, and enforce decisions at API gateways or application endpoints using PEP/PDP patterns. This supports least-privilege access and audit compliance.

RBAC grants access based on user roles; ABAC evaluates attributes (user, resource, environment) dynamically. ABAC provides finer-grained control for complex scenarios where role alone is insufficient, enabling context-aware policy decisions across OAuth2 scopes and multi-layer enforcement.

Authorization audit logging captures access decisions, denials, and policy applications to satisfy NIST controls like AC-3, AC-4, and AC-6. Log PEP and PDP decisions at critical endpoints and data stores to create end-to-end trails for compliance review and forensic analysis.

Yes. OAuth2 scopes integrate with policy engines to enforce scope-based access on APIs. Combine scope validation with PDP policy evaluation to implement least-privilege access, attribute rules, and ownership checks across resource endpoints and data stores.

Authorization security addresses AC-3 (access enforcement), AC-4 (information flow control), and AC-6 (least privilege). Policy definitions, role hierarchies, attribute rules, and audit trails implement these controls across RBAC, ABAC, and OAuth2 scenarios.