What is the authorization concept known as implicit deny?

Implicit deny is a fundamental security principle indicating that unless a user or a system has explicit permission to access certain resources, that access is automatically denied. This means that for any access request, there must be a defined set of permissions, and only those with clear authorization can proceed. This concept helps to maintain a robust security posture by ensuring that unknown or unverified users do not gain unauthorized access to sensitive data or systems.

This principle is crucial in maintaining the integrity and confidentiality of information, as it minimizes the risk of exposing resources to users who may not have the right level of clearance or need. By assuming that no access is allowed unless specifically permitted, organizations can effectively safeguard their assets against potential breaches.