Least Privilege
Least Privilege — Access Restriction Principle in Zero Trust
Restriction
Minimum necessary access
Security
Reduced compromise risk
Temporary
Access only when needed
What is "Least Privilege"?
"Least Privilege" is a security principle stating that users, processes, and systems should receive only the minimum necessary access rights to perform their tasks. This principle is one of the key components of Zero Trust architecture.
The Least Privilege principle helps minimize the attack surface and reduce potential damage in case of account or system compromise. Even if an attacker gains access to a user account, they can only perform actions for which that user has rights, significantly limiting attack capabilities.
Implementing Least Privilege includes regular access rights audits, role-based access models (RBAC), temporary privilege granting (just-in-time access), and automatic revocation of access rights when user role or context changes.
Key Aspects:
Related Concepts
Assume Breach
Assume security breach
Principle Implementation
Role-Based Access (RBAC)
Assigning access rights based on user roles rather than individual accounts, simplifying management and ensuring compliance with the least privilege principle.
Just-in-Time Access
Granting temporary privileges only for the duration of a specific task with automatic revocation after completion.
Access Segmentation
Dividing resources into segments with independent access rights, preventing lateral movement of attackers.
Regular Auditing
Periodic review and revocation of unused access rights, as well as verification of compliance with current security requirements.
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