OVERVIEW

All CUI (Controlled Unclassified Information) documents must be marked and protected according to applicable laws, regulations, and government-wide policies.  Staff, Faculty, and Students are responsible for knowing and following these guidelines.

MARKING DOCUMENTS OR FOLDERS

CUI Document of Folder Marking Example

Required

1. Header/top/banner of document has "CUI" or "Controlled" in bold letters
2. Designation Indicator (5 items) see above example

Not Required/optional

1. Portion marking (if you use portion marking, you must portion mark everything.  Subjects, titles, individual sections, parts, paragraphs, or similar portions known to contain CUI, will be portion marked with "(CUI)" and everything else will have a "(U)" in front of the sentence.
2. CUI coversheet
3. Bottom/footer marking (but highly recommended)
4. Page numbers

CUI BANNER MARKING

These are preceded by a double forward slash (//) to separate them from the rest of the CUI banner marking. When a document contains multiple Limited Dissemination control markings, those Limited Dissemination control markings must be alphabetized and separated from each other with a single forward slash (/).

CUI Banner Marking Example

MARKING DEVICES

1. Any device (laptop, computer, removable storage or flash drive, servers, and network storage) must have a CUI label, as shown below, affixed to the exterior of the device where it is easy to read.

CUI Device Marking Example

MARKING FAXES

All faxes containing CUI must include an approved cover sheet that includes a CUI designation indicator.  You can download a copy of the CUI coversheet example at https://www.archives.gov/cui/additional-tools.

CUI Cover Sheet Example

MARKING EMAIL

Required:

1. Include a “CUI” banner,
2. Be encrypted,
3. Contain a CUI designation indicator block, and
4. If including attachments that contain CUI, the file name must indicate it includes CUI.

Optional but best practice:

1. Apply "CUI" to footer and subject line.
2. All paragraphs known to contain CUI may be portion marked.

Email Marking Example