Least Authority
Noun · Security & Infosec
Definitions
A security principle that a component or actor should have only the minimum authority needed to perform its intended function and nothing more. It is closely related to least privilege, especially in capability-based systems and secure software design.
In plain English: Giving each user or component only the minimum power required.
Example: "The service was redesigned around least authority so each worker could access only the exact queue and secret it needed."