In computer security, which one of the following means that the information in a computer system can only be accessed by authenticated parties ?

In computer security, the CIA triad (Confidentiality, Integrity, and Availability) is a fundamental model used to guide policies for information security. Confidentiality refers to the set of rules or measures that limits access to information, ensuring that only authorized (authenticated) parties can view or access sensitive data. It prevents sensitive information from reaching the wrong people.

• Integrity: Ensures that data is accurate and has not been tampered with or modified by unauthorized parties.
• Availability: Guarantees that the information and communication services are accessible and usable by authorized users when required.
• Reliability: Refers to the ability of a system to consistently perform its intended function without failure.

Since the question focuses on restricting access to authenticated parties, Confidentiality is the correct term.