Which element of information security ensures that information is accessible to authorized users only?

The element of information security that ensures that information is accessible only to authorized users is confidentiality. Confidentiality is focused on protecting sensitive information from unauthorized access and ensuring that only individuals who have the right permissions can view or handle that information. This typically involves implementing measures such as user authentication, access controls, and encryption to safeguard data.

When confidentiality is enforced, sensitive data is shielded from unauthorized individuals and entities, maintaining privacy and securing proprietary or classified information. This principle is fundamental to building secure systems and trust among users and stakeholders, as it prevents sensitive data from being compromised.

The other concepts, while essential to information security, serve different purposes. Integrity pertains to the accuracy and trustworthiness of data, ensuring it remains unchanged unless altered by authorized individuals. Availability ensures that information and resources are accessible to authorized users when needed. Accountability refers to the ability to trace actions back to users or entities within the system, helping to prevent and investigate security breaches. Each element plays a unique and critical role in an organization's overall security posture.