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Least Authority Model

A security principle limiting a system component's permissions to essential functions.

Understanding Least Authority Model


  • Users should only have permissions required for their job.

  • Applications should only access necessary system resources.

  • Reduces risk of insider threats and privilege escalation attacks.

Key Benefits

  • Minimizes Attack Surface – Limits exposure of sensitive data.

  • Prevents Malware Propagation – Restricts infected processes from accessing critical resources.

  • Enhances Compliance – Aligns with Zero Trust Architecture (ZTA).

Implementation Strategies

  • Apply Role-Based Access Control (RBAC)

  • Regularly Audit and Review Access Permissions

  • Use Just-in-Time (JIT) Access for Privileged Actions

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