According to the NIST cybersecurity framework, which of the following is NOT a key function?

The NIST Cybersecurity Framework identifies five key functions that serve as a comprehensive approach to managing cybersecurity risks. These functions are: Identify, Protect, Detect, Respond, and Recover. The primary purpose of these functions is to help organizations understand their cybersecurity posture and efficiently manage risks.

In this context, "Monitor" does not appear as one of the official key functions within the framework. Instead, monitoring activities typically fall under the broader category of Detect, which involves identifying anomalies and events that may indicate a security incident. By understanding this distinction, it becomes clear why "Monitor" is not recognized as one of the key functions in the NIST Cybersecurity Framework. The other functions—Identify, Protect, and Respond—are vital components that enable organizations to establish a robust cybersecurity strategy.