This principle addresses the protection of information from unauthorized access and disclosure. It ensures that only authorized users can access certain data, protecting sensitive information from unauthorized people.

This principle focuses on ensuring that systems, services, and data are always accessible when they are needed. It protects against disruptions, failures, or attacks that could affect the availability of information.

Authorization defines the permissions and access rights granted to an authenticated user. It determines which actions or resources a user is allowed to use after authentication. Authorization helps ensure that users can only access the resources they are authorized to access.

Integrity aims to ensure the accuracy and integrity of data and information. It ensures that data cannot be manipulated or altered unnoticed, ensuring the accuracy and reliability of the information.

Authentication refers to the process of verifying the identity of a user or entity to ensure that it is indeed who it claims to be. This is often achieved through the use of username and password, biometrics, or other security mechanisms.