Which concept involves limiting user access to the minimum required for their job?

The principle of least privilege is a fundamental security concept that mandates users be granted the minimum level of access necessary to perform their job functions. This approach mitigates the risk of accidental or intentional misuse of resources by reducing the potential attack surface. By adhering to this principle, organizations can prevent unauthorized access to sensitive information and reduce the likelihood of successful cyber attacks.

Implementing this principle often involves regularly reviewing permissions and ensuring that they align with actual job requirements, thus enhancing overall security posture. This strategy is essential in safeguarding critical data and maintaining compliance with various regulatory standards.

While role-based access control does relate to managing user privileges based on their roles within an organization, it is essentially a method to enforce the principle of least privilege. Multi-user access and unrestricted access do not align with minimizing permissions according to job requirements, as they inherently allow broader access than necessary.