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

Source Selection SSEL

A CUI category in the Procurement and Acquisition grouping of NARA's registry, CUI Basic or CUI Specified depending on the authority, marked CUI//SP-SSEL.

For a defense contractor

Foxx Cyber's note, not NARA's

Marked SSEL. Proposal and evaluation information before award. Handling it wrongly is a procurement integrity problem, not only a CUI one.

NARA's description

CUI Registry · Source Selection

Per FAR 2.101: any of the following information that is prepared for use by an agency for the purpose of evaluating a bid or proposal to enter into an agency procurement contract, if that information has not been previously made available to the public or disclosed publicly: (Items 1-10).

Verbatim from the registry entry, which NARA last reviewed on July 30, 2025. Fetched 2026-09-08.

Markings

Category marking
SSEL
Banner, Specified authorities
CUI//SP-SSEL
Banner, Basic authorities
CUI
Alternative banner, Basic
CUI//SSEL

A banner reads CUI for Basic categories and CUI//SP-SSEL 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
48 CFR 14.211BasicCUI
48 CFR 14.303SpecifiedCUI//SP-SSEL
48 CFR 14.402-1(a)SpecifiedCUI//SP-SSEL
48 CFR 15.207(b)BasicCUI
48 CFR 15.505(f)BasicCUI
48 CFR 15.609(a)SpecifiedCUI//SP-SSEL
48 CFR 3.104-3(a)BasicCUI41 USC 2105 48 CFR 3.104-8 48 CFR 3.104-2(b)(2)
48 CFR 42.1503(b)BasicCUI
48 CFR 5.401(a)BasicCUI
48 CFR 603.104-4BasicCUI41 USC 2105 48 CFR 3.104-8
48 CFR 4.802(e)BasicCUI41 USC 2105 48 CFR 3.104-8
48 CFR 836.203BasicCUI
41 USC 2102(a)BasicCUI41 USC 2105
48 CFR 14.401(a)SpecifiedCUI//SP-SSEL41 USC 2105 48 CFR 3.104-8
48 CFR 3.104-4SpecifiedCUI//SP-SSEL41 USC 2105 48 CFR 3.104-8
48 CFR 52.215-1(e)SpecifiedCUI//SP-SSEL41 USC 2105 48 CFR 3.104-8
48 CFR 9.105-3(a)BasicCUI

Source: https://www.archives.gov/cui/registry/category-detail/source-selection.