Which of the following is NOT one of the main objectives of information security?

The primary objectives of information security are often summarized by the principles of confidentiality, integrity, and availability, commonly referred to as the CIA triad. Confidentiality focuses on ensuring that sensitive information is accessed only by those who are authorized. Integrity involves maintaining the accuracy and reliability of data, ensuring it is not altered in an unauthorized manner. Availability ensures that information and resources are accessible to authorized users when needed.

Disposal, while an important aspect of information management, is not regarded as a main objective of information security in the same way that the CIA triad is. It falls more into operational practices related to data lifecycle management rather than the foundational goals of securing information itself. Therefore, identifying disposal as not being one of the main objectives of information security is appropriate.