Supply Chain Security Practices and Controls
Practices & Controls is the operating layer of the handbook. Use it when a standard, regulation, procurement requirement, customer assurance request, audit need, or supply chain threat has created a need for action, and you need to decide what should actually operate.
A practice is a recurring operating activity. A control is a safeguard, check, workflow, approval, or requirement inside that practice. Evidence is what the control produces or retains so the practice can be reviewed.
Evidence may be an artifact, record, claim, measurement, attestation, certificate, manifest, SBOM/xBOM, update record, vulnerability record, lifecycle-state record, log, or audit material.
Good evidence is bound to a decision, product or supplier scope, lifecycle stage, and verification path.
Use this section to move from standards and threats to practical behaviors, core controls, evidence, verification, and implementation choices.
Pages in this section
| Page | Use it when you need to... |
|---|---|
| 10 Best Practices | Understand the core supply chain security practices and how they connect to evidence, lifecycle, verification, and technology options. |
| Lifecycle Map | Place practices, controls, and evidence across design, sourcing, manufacturing, provisioning, logistics, acceptance, deployment, update, repair, transfer, and decommissioning. |
| Supplier and Procurement Assurance | Operate supplier selection, contracting, assurance review, renewal, and continued-use processes based on evidence. |
| Product Acceptance | Accept delivered products, components, platforms, firmware loads, or services only when evidence supports the trust decision. |
| Secure Development and Release Governance | Govern supplier inputs, dependencies, build outputs, reviews, approvals, signing readiness, and release evidence. |
| Software Component and Vulnerability Management | Maintain visibility of software, firmware, components, supplier inputs, affected products, vulnerabilities, remediation, and status communication. |
| Secure Updates and Lifecycle Monitoring | Govern update approval, authorization, signing, delivery, installation, recovery, evidence refresh, and continued lifecycle assurance. |
| Audit and Compliance Readiness | Maintain traceable control evidence for audit, customer assurance, certification, and internal review. |
| Assurance Implementation Planning | Plan engineering capabilities from assurance decisions, evidence needs, verification paths, and lifecycle retention requirements. |
Operating model
Practice pages should follow this model:
Practice -> control -> evidence -> verification -> technology option
This keeps the site practical and neutral. Standards and threats explain why action is needed; practice pages explain what should operate, what evidence should be retained, how it can be reviewed, and which technology options may help.
Evidence maturity
| Level | Description |
|---|---|
| Assertion | A supplier or team says a control exists |
| Documented process | The process, owner, scope, and review cadence are described |
| Produced artifact | A record, manifest, certificate, SBOM/xBOM, log, measurement, attestation, or report is provided |
| Verifiable artifact | The recipient can verify origin, integrity, freshness, scope, or consistency |
| Lifecycle-retained evidence | Evidence is retained, refreshed, and reused across deployment, update, repair, transfer, audit, and decommissioning |
Use Evidence Maturity Model, Evidence Checklist, Glossary, and Evidence Package Template when turning practice evidence into reusable requests, review criteria, or audit packages.
What stronger assurance looks like
| Weak | Better | Stronger |
|---|---|---|
| A supplier says a control exists | The supplier describes the process, owner, scope, and review cadence | The supplier provides evidence, a verification path, lifecycle retention, and a remediation process |
| A product is accepted once | Acceptance checks are documented | Acceptance evidence is retained and updated after deployment, update, repair, transfer, and decommissioning |
| Standards are listed as references | Standards are grouped by function | Standards are mapped to requirements, evidence structures, technical mechanisms, and gaps |
How to translate a driver into action
Use this pattern when translating a regulation, customer request, procurement expectation, audit task, certification activity, product-acceptance decision, or threat pattern into practical work.
| Step | Translation question |
|---|---|
| Standard or threat | What standard, regulation, customer request, procurement expectation, audit need, product-acceptance decision, governance concern, or threat brings the reader here? |
| Practice | What recurring operating activity should exist? |
| Control | What safeguard, check, workflow, approval, or requirement sits inside the practice? |
| Decision | What decision becomes stronger if the control operates? |
| Failure mode | What could go wrong if the claim is wrong or unverifiable? |
| Evidence | What artifact, record, claim, measurement, attestation, certificate, manifest, SBOM/xBOM, update record, vulnerability record, lifecycle-state record, log, or audit material would support the control? |
| Verification | How can the recipient test origin, integrity, freshness, consistency, or lifecycle relevance? |
| Technology options | Which mechanisms, protocols, formats, trust anchors, verifier workflows, or tools may help produce, protect, exchange, verify, or retain the evidence? |
Practical questions
Questions to ask suppliers
- What evidence can you provide for the practice, control, or assurance claim being discussed?
- Which lifecycle stage, product version, component, service, or supplier scope does the evidence cover?
- How can a recipient verify origin, integrity, freshness, and applicability?
Questions to ask internally
- What standard, threat, expectation, or decision brought us to this page?
- What would go wrong if we relied only on a policy statement or supplier assertion?
- What evidence would make the decision reviewable later?
Questions to ask assessors / auditors
- Can the claim be traced to a control, artifact, lifecycle stage, and source reference?
- Are unsupported assumptions and evidence gaps visible?
- Is the guidance being used as practical interpretation rather than formal compliance advice?
Questions to ask implementers
- What systems, workflows, or owners produce the needed evidence?
- How will evidence be retained, refreshed, and reused after the initial decision?
- What technology options may help without becoming the organizing principle?
Next actions
- Use Threats and Failure Modes to understand what can go wrong.
- Use Lifecycle Map to decide when practices, controls, and evidence matter.
- Use 10 Best Practices to connect practices, evidence, verification, and technology options.
- Use Resources for evidence definitions, checklists, maturity models, and package templates.
- Use Technology Options to compare implementation and verification mechanisms.