What is the term for classified and unclassified data that is vital for national security?

The term that refers to classified and unclassified data that is vital for national security is National Defense Information. This encompasses all types of information, whether it is classified or unclassified, that is essential to the protection of the nation's military and national interests. Such information could include military strategies, defense technology, and information about vulnerabilities that adversaries might exploit. By safeguarding this information, government entities can better protect the integrity and safety of national security operations and facilities.

In contrast, the other terms listed refer to different concepts within the realm of security and intelligence. Intelligence Collection Tradecraft pertains to the methods and techniques used to gather intelligence, while Spear-Phishing relates to specific cyber threats aimed at individuals to extract sensitive information. Covert Operations involve secret actions conducted by government agencies to achieve strategic objectives. Therefore, these options do not encapsulate the broader category of data critical to national security that National Defense Information does.