Which aspect of the CIA Triad ensures that information is only accessible to those authorized?

The aspect of the CIA Triad that ensures information is only accessible to those authorized is confidentiality. Confidentiality is a fundamental principle in information security that protects sensitive information from unauthorized access. It ensures that only individuals who have the necessary permissions or clearance can view or use the information. Mechanisms such as encryption, user authentication, and access controls are commonly implemented to maintain confidentiality.

In contrast, integrity refers to the accuracy and trustworthiness of data, ensuring that information remains unchanged or unaltered except by those authorized to do so. Availability ensures that information and resources are accessible when needed, maintaining the functionality of systems and data for users who require it. Functionality is not a recognized aspect of the CIA Triad and does not specifically relate to any security principle within the context of information security.