If a SIPRNet token is inserted into an unclassified Card Reader, what must the subscriber do?

When a SIPRNet token is inserted into an unclassified card reader, it is critical for the subscriber to understand the risks associated with the improper use of secure tokens. In this scenario, informing the Trusted Agent is the most appropriate action because it ensures that the situation is handled by a designated authority trained to maintain security protocols and mitigate potential vulnerabilities.

Notifying the Trusted Agent allows them to assess the implications of the token being in an unclassified environment. This could involve a review of security measures, ensuring that no sensitive information is compromised, and possibly re-evaluating the security posture of the subscriber’s access to SIPRNet. The Trusted Agent can provide guidance for corrective action, which is essential to maintain the integrity of the system.

This approach emphasizes the importance of adhering to established procedures for handling secure tokens and being proactive in maintaining security standards. It's vital to communicate any potential security breaches or irregularities, like the insertion of a SIPRNet token into the wrong reader, to prevent unauthorized access or exposure of sensitive information.