Which activity is NOT a potential example of unauthorized disclosure?

The activity of completing a class on information security is an appropriate and authorized action that enhances awareness and understanding of information handling and protection protocols. Participating in training on information security is essential for individuals responsible for managing sensitive information, as it equips them with the knowledge to recognize and prevent unauthorized disclosure. This training is designed to reinforce best practices, policies, and procedures that safeguard classified or sensitive information.

In contrast, the other activities—forgetting to lock a classified drawer, discussing classified information in public, and using classified information in a presentation without clearance—each involve a violation of security protocols that could lead to unauthorized disclosure of sensitive information. These actions indicate a failure to adequately protect classified materials or a disregard for established security policies, which is why they are categorized as potential examples of unauthorized disclosure.