Must banner markings be applied to an email that contains a classified attachment but no classified information in the body?

Banner markings are essential for ensuring that recipients understand the classified nature of the communication, regardless of whether the classified information is exclusively in an attachment or present in the body of an email. When an email contains a classified attachment but no classified information in the body, it is still important to apply banner markings within the body of the email.

This practice adheres to the strict guidelines surrounding the handling of classified information, which prioritize clear identification of classified content to prevent unauthorized disclosure. The banner markings serve as an immediate visual cue that alerts the reader to the presence of classified material associated with the email, thus maintaining security protocols.

Properly marking the body of the email is a crucial part of safeguarding information, ensuring that all recipients are aware of the need to handle the communication with care, in accordance with security measures. This approach reinforces the culture of protection surrounding classified information.