Ensure sensitive information is properly identified and protected with our CUI Marking course. Built on guidance from the U.S. National Archives and Records Administration (NARA) and the Information Security Oversight Office (ISOO), this training explains how to correctly apply Controlled Unclassified Information (CUI) markings under Executive Order 13556 and 32 CFR Part 2002. Learn the requirements for banner markings, designation indicators, portion markings, and CUI categories. This course also covers common marking mistakes, best practices, and how to manage CUI in both unclassified and commingled environments.