Access to sensitive or restricted information being controlled describes which of the key communications and information systems principles?

The principle of security encompasses the measures taken to protect sensitive or restricted information from unauthorized access, misuse, or compromise. In the context of communications and information systems, security ensures that only authorized personnel have access to such information, maintaining its confidentiality.

Effective security measures are essential for safeguarding data integrity and ensuring that information is only modified or accessed by those with the appropriate permissions. This principle is vital in incident management, where the handling of sensitive information can impact operational effectiveness and trust among stakeholders.

While integrity, availability, and reliability are all important aspects of information systems, they focus on different elements. Integrity pertains to the accuracy and consistency of data, availability emphasizes ensuring that information is accessible when needed, and reliability refers to the trustworthiness and performance of systems. Thus, security specifically addressing the control of access to sensitive information illustrates the primary function of protecting that data within the framework of communication and information systems.