* Background on Legacy Markings and CUI
* Legacy markings refer to classification labels used before the implementation of theControlled Unclassified Information (CUI) ProgramunderDoD Instruction 5200.48.
* Documents with legacy markings (such as "For Official Use Only" (FOUO) or "Sensitive But Unclassified" (SBU)) must be reviewed for re-marking or redaction to align withCUI requirements.
* When Must Legacy Markings Be Updated?
* If the document is retained internally (Answer A - Incorrect): Documents under DoD control do not require immediate re-marking unless they are being shared externally.
* If the document is classified as Secret (Answer B - Incorrect): This question is aboutCUI, not classified information. Secret-level documents follow different marking rules underDoD Manual
5200.01.
* If a document is being shared externally (Answer C - Correct):
* According toDoD Instruction 5200.48, Section 3.6(a), organizations mustreview legacy markings before sharing documents outside the organization.
* The document must bere-markedin compliance with the CUI Program before dissemination.
* If the original document does not contain CUI (Answer D - Incorrect): The original source document's status does not affect the requirement to re-mark a derivative document if it contains CUI.
* Conclusion
* The correct answer isC: Documents with legacy markings must bere-marked or redacted when being shared outside the organizationto comply with DoD CUI guidelines.
:
DoD Instruction 5200.48(Controlled Unclassified Information)
CUI Marking Handbook by NARA(National Archives and Records Administration) CMMC 2.0 Scoping Guide for CUI Environments