Comparisons

Authentication vs Authorization vs Accounting (AAA)

Venn Diagrams · made in Skemio

Venn diagram representing Authentication, Authorization, and Accounting, showcasing intersections like Identity Tokens, Privilege Audits, and Zero Trust.
Venn diagram representing Authentication, Authorization, and Accounting, showcasing intersections like Identity Tokens, Privilege Audits, and Zero Trust.
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What it shows

  • Authentication verifies identity via credentials, tokens, or biometrics.
  • Authorization evaluates permissions and policies to grant resource access.
  • Accounting logs user actions for audit compliance and anomaly detection.

The takeaway

Secure systems require all three: AuthN verifies identity, AuthZ restricts rights, Accounting tracks impact.

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