to move, Enter to open, Esc to close. Try 3.5.3, AC.L2-3.1.1, MFA or unmarked.

Protected Critical Infrastructure Information PCII

A CUI category in the Critical Infrastructure grouping of NARA's registry, CUI Specified, marked CUI//SP-PCII.

NARA's description

CUI Registry · Protected Critical Infrastructure Information

As defined by 6 USC 131-134, and 6 CFR 29, PCII relates to threats, vulnerabilities, or operational experience related to the national infrastructure. PCII offers protection to private sector infrastructure information voluntarily shared with government entities for purposes of homeland security.

Verbatim from the registry entry, which NARA last reviewed on May 13, 2025. Fetched 2026-09-08.

Markings

Category marking
PCII
Banner marking
CUI//SP-PCII

A banner reads CUI for Basic categories and CUI//SP-PCII 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 authorityBasic or SpecifiedBannerSanctions
6 CFR 29SpecifiedCUI//SP-PCII6 CFR 29.9

Source: https://www.archives.gov/cui/registry/category-detail/protected-critical-infrastructure-information.