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

The term that refers to classified and unclassified data essential for national security is National Defense Information. This encompasses a wide array of information that can impact the safety and effectiveness of military operations and broader national security policies. It includes sensitive data that might, if exposed or mishandled, pose risks to operations or the safety of personnel.

Intelligence Collection Tradecraft pertains more to the methods and techniques used in gathering intelligence rather than the data itself. Spear-Phishing is a type of cyber attack aimed at stealing sensitive information by impersonating a trusted source, which is unrelated to the classification or importance of data regarding national security. Covert Operations denote activities conducted in secret, often involving military or intelligence personnel, but again, this term does not encapsulate the broader category of important data related to national defense.