National Security Letter LNSL
A CUI category in the Law Enforcement grouping of NARA's registry, CUI Basic, marked CUI.
NARA's description
CUI Registry · National Security LetterRelated to administrative orders sent to compel the recipients of the letters to provide information to federal investigators.
Markings
- Category marking
- LNSL
- Banner marking
- CUI
- Alternative banner, Basic
- CUI//LNSL
A banner reads CUI for Basic categories and CUI//SP-LNSL for Specified ones, followed by any limited dissemination control such as NOFORN. How the marking rule works, verbatim from 32 CFR 2002.20.
Authorities
The law, regulation or Government-wide policy that makes this information CUI, and whether it does so as a Basic or a Specified authority.
| Safeguarding or dissemination authority | Basic or Specified | Banner | Sanctions |
|---|---|---|---|
| 50 USC 3162(b) | Basic | CUI | — |
Source: https://www.archives.gov/cui/registry/category-detail/national-security-letter.