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FAQGLOBALNIST SP 800-161 Rev. 1

NIST SP 800-161 Rev. 1 How should teams handle counterfeits under NIST SP 800-161 Rev. 1 supply-chain risk management

A standalone answer for teams deciding how counterfeits should be scoped, evidenced, assigned, and reviewed under NIST SP 800-161 Rev. 1.

Based on public NIST and supplier-risk guidance, this answer provides practical criteria, owner roles, evidence expectations, and review gates for counterfeit-risk handling.

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Author
Sorena AI
Published
May 9, 2026
Updated
Jul 24, 2026
Questions
2

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1

Cited legal and guidance references.

Publication metadata
Sorena AI
Published May 9, 2026
Updated Jul 24, 2026
Overview

spans acquisition, engineering, security, legal, quality, logistics, and C-SCRM. NIST SP 800-161 Rev. 1 Update 1 is voluntary cybersecurity supply-chain guidance for public- and private-sector enterprises; federal departments and agencies also have implementation requirements from other authorities. This page explains how teams can identify counterfeit risk, document evidence, assign ownership, and review the decision when conditions change.

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2 of 2 questions
Question 1

What should teams do about counterfeit risk under NIST SP 800-161 Rev. 1?

Use criticality analysis to identify the systems and components where counterfeit or tampered items could create unacceptable mission, safety, availability, confidentiality, or integrity impact. NIST's SR-11 guidance calls for coordinated anti-counterfeit policies and procedures and, where appropriate, qualified bidder or manufacturer lists and authorized suppliers. SR-11(3) says enterprises should conduct for critical components at a minimum.

Prevention also includes tamper resistance and detection for critical components (SR-9), inspection before use and periodically afterward (SR-10), controlled service and repair (SR-11(2)), and contract flow-down where relevant. The organization must still tailor methods to the item and threat; the publication does not prescribe a single test, universal reporting destination, certification, or fixed inspection frequency for every organization.

Obsolete parts are a common borderline case. NIST's telecommunications example considers an original component that is no longer produced, a costly redesign, and purchases from the . The example uses trained physical inspection, digital imaging, signature and serial or part-number verification, sample electrical testing, design redundancy, and alternative vetted sources. These are illustrative controls, not a universal checklist or proof that every secondary-market item is counterfeit.

When authenticity is in doubt, stop the item from entering or remaining in production until the authorized decision-maker resolves its status. Follow applicable legal, regulatory, contractual, safety, evidence-handling, and reporting procedures rather than assuming that one NIST process fits every sector.

  • Before purchase: record criticality, approved sources, manufacturer and distributor identity, required traceability, inspection or test criteria, and relevant flow-down terms.
  • At receipt and before use: match the delivered item to purchase, part, lot, serial, custody, packaging, signature, inspection, and acceptance records appropriate to the item.
  • On suspicion: segregate the item, prevent installation or further distribution, preserve records and chain of custody when required, investigate related lots and systems, and use the organization's required reporting channel.
  • After disposition: record the authenticity decision, removal or replacement, supplier corrective action, affected inventory and systems, alternative sources, and the updated supplier and continuity risk.
Citations
NIST SP 800-161 Rev. 1 Update 1 C-SCRM

Appendix A, SR-9 through SR-11 cover tamper controls, inspection, component authenticity, coordinated anti-counterfeit procedures, qualified sources, service and repair, and scanning for critical components.

Question 2

What evidence should support counterfeits under NIST SP 800-161 Rev. 1?

Evidence should connect the exact item to its claimed source and verification result and show how suspected or confirmed counterfeits were controlled. A general supplier certificate does not establish the identity of a delivered part when it cannot be matched to the part, lot, serial number, shipment, or other item-level record.

  • Approved-source and supplier due-diligence record; purchase and shipment traceability; part, lot, and serial identifiers.
  • Acceptance, authenticity, tamper, or counterfeit test results and the criteria used.
  • Quarantine, investigation, reporting, disposition, corrective-action, and supplier-risk reassessment records.
Citations
NIST SP 800-161 Rev. 1 Update 1 C-SCRM

Appendix A supports traceable inspection, authenticity, reporting, and disposition evidence for critical components; the acquisition guidance connects product authenticity and risk assessment to purchase and deployment decisions.

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Primary sources

References and citations

NIST SP 800-161 Rev. 1 Update 1 C-SCRM
doi.org
Referenced sections
  • Appendix A supports traceable inspection, authenticity, reporting, and disposition evidence for critical components; the acquisition guidance connects product authenticity and risk assessment to purchase and deployment decisions.
"identifying, assessing, and mitigating cybersecurity risks"
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