What is the role of official mail in SCI handling?

• A. Official mail containing SCI must be properly marked, processed through secure channels, and disclosed only to authorized recipients.
• B. Official mail should be treated as ordinary mail.
• C. Official mail must be encrypted but not marked.
• D. Official mail can be shared with all.

Answer: (A)

Official mail containing SCI must be clearly marked to show its sensitive contents, so everyone handling it knows to apply the proper protections. Marking communicates the required handling procedures and helps ensure it’s treated as restricted information. It also has to be sent through approved secure channels, which means the mail is protected in transit and only through designated, controlled routes or custody. Access is then limited to authorized recipients who have the appropriate clearance and a need to know, upholding the need-to-know principle.

This combination—clear marking, secure transit, and restricted disclosure—keeps SCI from being exposed to unauthorized individuals. Treating SCI mail as ordinary mail would bypass safeguards. Encryption alone does not replace the need for correct marking and secure routing, and sharing with everyone violates the need-to-know rule.