Certified Ethical Hacker (CEH) Practice Exam 2026 – Your All-in-One Guide to Exam Success!

Confidentiality in cybersecurity refers specifically to the measures and protocols put in place to restrict access to information only to those individuals or systems that are authorized to view it. This serves to protect sensitive data from unauthorized access, disclosure, or breaches. Ensuring confidentiality involves implementing various strategies, such as access controls, encryption, and authentication processes, which safeguard data from being accessed by unauthorized users.

The other definitions presented focus on different aspects of data security. For example, ensuring data accuracy and reliability pertains to integrity, which is a separate principle in cybersecurity. Similarly, techniques to recover lost data are associated with data recovery and availability rather than confidentiality, while maintaining data integrity involves procedures to ensure that data is reliable and unaltered from its intended state. These distinctions further emphasize why the correct definition of confidentiality is centered on access control and restriction to authorized users.