Which of the following does NOT constitute spillage?

The correct choice highlights a situation involving classified information that has been properly assessed and processed for downgrading. In essence, downgrading refers to the formal process of changing the classification status of information based on established protocols. When this occurs, the information is deliberately evaluated and deemed appropriate for a lower classification, which indicates compliance with regulations governing the handling of classified information.

In contrast, options that refer to classified information unintentionally sent to unclassified systems, shared with unauthorized personnel, or stored on devices that lack the appropriate security measures all describe incidents where classified data could potentially lead to unauthorized access or exposure. These situations exemplify spillage because they represent breaches of policy regarding the protection of classified material, thereby increasing the risk of compromising sensitive information.