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Use a risk-based supplier assessment that connects geopolitical exposure to business impact. Map the supplier and its important sub-tier providers, investigate ownership and influence, trace technology provenance, test foundational cyber practices, model disruption scenarios, and then impose controls, contract terms, monitoring, and exit preparations proportionate to the dependency. A supplier’s country of incorporation alone does not establish that it is unsafe; the relevant question is what could influence the supplier, what access and data it has, how replaceable it is, and whether your organization can continue operating if the relationship is interrupted.
This approach follows the five components identified by NIST Special Publication 1326, published in July 2026: foreign ownership, control, or influence (FOCI); provenance; resilience; foundational cyber practices; and supply-chain tiers. NIST defines due diligence as investigating pertinent available information about a supplier or product to inform a new acquisition or an existing system.
What a geopolitical third-party cyber-risk assessment must establish
The assessment should produce a documented decision, not merely a completed questionnaire. For each supplier, record the dependency, credible threat and disruption scenarios, evidence supporting your conclusions, residual risk, accountable owner, and the action required.
NIST states: “The components of a Due Diligence Assessment are Foreign Ownership, Control, or Influence (FOCI); Provenance; Resilience; Foundational Cyber Practices; and Supply Chain Tiers.” Treat those components as connected questions rather than separate compliance silos.
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| Dimension | What to determine | Why it matters during disruption |
|---|---|---|
| Foreign ownership, control, or influence | Who owns, controls, funds, directs, or can legally compel the supplier, including parent entities and management ties | Political pressure, legal orders, sanctions, ownership changes, or loss of access to personnel and infrastructure may affect service or data |
| Provenance | Where design, development, build, hosting, manufacture, distribution, maintenance, support, and data handling occur | Hidden dependencies, compromised components, export restrictions, or regional outages can interrupt delivery or updates |
| Resilience | How the supplier detects incidents, maintains service, restores functionality with integrity, and substitutes critical resources | A technically secure supplier may still fail if it cannot operate, support customers, or recover during a crisis |
| Foundational cyber practices | Identity and privileged access, vulnerability handling, secure development, asset management, backups, recovery, logging, and incident response | Weak controls increase the chance that geopolitical pressure or criminal activity becomes a compromise of your environment |
| Supply-chain tiers | Relevant subsidiaries, subcontractors, cloud providers, software components, manufacturers, distributors, and other sub-tier dependencies | Your contract with one entity does not remove risks created by a party that entity relies on |
NIST SP 800-161 Rev. 1 also identifies foreign operations and laws, FOCI, management ties, sanctions, and trade-controls compliance as considerations. These are indicators for investigation, not automatic findings of wrongdoing.
Start by mapping the dependency, not by sending a generic questionnaire
Begin with an inventory of what each supplier does for you. Include technology vendors, managed service providers, logistics and manufacturing partners, contractors with administrative access, and providers embedded in another supplier’s service.
- Describe the service or product. Name the business process, applications, facilities, or devices that depend on it. Note whether it is a production service, a development tool, a component, support, or a physical supply.
- Record data exposure. Classify the information the supplier stores, processes, transmits, or can view. Include credentials, source code, personal information, regulated records, operational technology data, and metadata that could reveal business activity.
- Record access. Identify network paths, application programming interfaces, remote administration, identity-provider integration, privileged accounts, support channels, update mechanisms, and physical access.
- Map sub-tiers. Ask which entities perform development, hosting, manufacturing, support, distribution, identity verification, payment, or other material functions. Mark unknown tiers as an information gap rather than assuming they are low risk.
- Assess substitutes. Document alternate suppliers, internal workarounds, portability of data, replacement lead time, licensing constraints, and whether another supplier depends on the same underlying provider.
- Assign an accountable owner. Procurement, security, legal, business continuity, and the service owner should agree who accepts residual risk and who must act if conditions change.
CISA’s supply-chain material emphasizes supplier visibility and the consequences of supplier disruption. Its April 3, 2023 fact sheet reports more than 30 million small and midsize businesses in the United States, accounting for nearly half of the nation’s gross domestic product; CISA presents that figure in the fact sheet, but it does not identify the underlying statistical publisher or reference year. The point for an assessment program is practical: a smaller supplier can still be operationally critical.
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Ownership, control, and influence
Collect current ownership information for the contracting entity, material subsidiaries, parent companies, and investors with meaningful voting or governance rights. Ask who appoints directors, controls key decisions, provides financing, or can direct operations. Review management ties, shared personnel, government ownership, and relationships that could create influence without majority ownership.
Confirm the date of the information and define a trigger for refreshing it. A merger, acquisition, recapitalization, change in board control, or new government relationship can alter risk even when the product and contract remain unchanged.
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Operational and technology provenance
Trace the locations and entities involved in the full service lifecycle. For software, this includes source-code development, build systems, package repositories, signing infrastructure, update distribution, support, and hosting. For hardware, include design, component sourcing, manufacturing, testing, shipping, maintenance, and replacement. For cloud or managed services, identify hosting regions, operations centers, support access, and critical subcontractors.
Ask for a bill of materials or equivalent component disclosure where appropriate, but do not assume a document proves that every dependency is known. Compare declared provenance with observed domains, update paths, certificates, administrative contacts, and other technical evidence your organization can lawfully collect.
Laws, sanctions, and trade controls
Determine which jurisdictions govern the supplier, its personnel, its infrastructure, the data, and the transaction. Consider foreign disclosure or access laws, sanctions, export controls, import restrictions, licensing requirements, data-location commitments, and contractual restrictions imposed by your customers or regulators.
Do not conclude that a particular rule applies without the facts of the transaction. Obtain jurisdiction-specific legal advice when ownership, data location, regulated technology, sanctions, or trade controls could affect whether you may buy, continue, transfer data, receive support, or make payments. Record the legal assumptions and the event that would require counsel to revisit them.
Prioritize suppliers when equal scrutiny is impossible
A practical program uses tiers so that evidence and review effort follow exposure. The dimensions below are decision factors, not a universal scoring standard. Set thresholds that reflect your organization’s tolerance, recovery objectives, and regulatory obligations.
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| Priority factor | Higher exposure indicators | Assessment consequence |
|---|---|---|
| Service criticality | Failure would stop a safety, revenue, production, customer, or regulatory process | Require tested recovery evidence, named escalation contacts, and a documented workaround or alternate source |
| Data sensitivity | Supplier handles credentials, personal data, secrets, regulated records, or high-value operational information | Increase access restrictions, evidence requirements, breach-notification specificity, and monitoring |
| Privilege and connectivity | Administrative rights, persistent remote access, identity integration, software update authority, or broad network reach | Use least privilege, just-in-time access, strong authentication, session logging, and rapid revocation |
| Ownership or influence | Opaque ownership, material foreign control, management ties, government access, or frequent ownership changes | Obtain deeper ownership evidence, legal analysis, and reassessment triggers |
| Provenance and tier visibility | Unknown build, hosting, support, manufacturing, or subcontractor locations | Make disclosure and flow-down obligations conditions of approval or remediation |
| Substitutability and concentration | Single source, long replacement lead time, proprietary data format, or shared dependency across many suppliers | Fund portability, alternate sources, inventory, escrow, or staged exit work |
| Resilience evidence | No tested recovery, unclear incident detection, weak backup integrity, or dependence on one region or facility | Set recovery objectives, test participation, reporting duties, and continuity milestones |
| Legal restrictions | Potential sanctions, export controls, data-transfer limits, or conflicting contractual obligations | Obtain legal review before onboarding or continuing the relationship |
A simple three-level outcome can be enough: approve with standard controls, approve with enhanced controls and a remediation date, or do not approve until a specific risk is resolved. Keep the rationale and evidence so a later reviewer can understand why two suppliers received different treatment.
Collect evidence that can support a decision
Use a questionnaire to open an investigation, not to certify a supplier. CISA’s sample questions cover security policies, asset management, network access controls, administrator training, contractual obligations, incident detection, and recovery. A supplier’s affirmative answer is an assertion; it is not proof that controls operate effectively.
Governance and accountability
- Who owns security, continuity, privacy, and incident response?
- Which policies govern access, vulnerability management, secure development, backup, and supplier oversight?
- How are exceptions approved, tracked, and reported to customers?
- Which independent assessments, audits, penetration tests, or attestations are available, and what systems and dates do they cover?
Identity, access, and administration
- How are workforce, contractor, service, and emergency accounts provisioned and removed?
- Are privileged accounts separated, strongly authenticated, time-limited, and logged?
- Can supplier support personnel reach your environment directly, and can that access be disabled immediately?
- How are credentials, keys, tokens, and secrets protected and rotated?
Detection, response, and notification
- What events are monitored, who investigates them, and how quickly is suspicious activity escalated?
- What notification timeline applies to incidents affecting your data, access, service availability, or software integrity?
- Can the supplier preserve evidence and support your investigation?
- How will it restore functionality with integrity after a major cyber incident, and what validation occurs before service resumes?
Vulnerability, asset, and recovery practices
- How are assets and software components inventoried, prioritized, patched, and retired?
- What is the process for receiving vulnerability reports and correcting critical flaws?
- Are backups isolated, protected from alteration, and tested through restoration?
- What recovery time and recovery point objectives apply to the service you use, and when were they last tested?
Prefer evidence that is specific to the service and current in time: control descriptions, test summaries, remediation records, architecture diagrams, access logs, recovery exercise results, and independent reports with scope and exceptions. Protect confidential material, limit collection to what is necessary, and record what remains unverified.
Add software and build-chain checks
Software creates a special dependency because the supplier can distribute code into your environment after the initial purchase. Use outside-in assessment and periodic self-attestation, then verify technical properties where feasible.
- Identify the delivery path. List repositories, build services, signing keys, package registries, update servers, deployment agents, and support channels that can affect the software you run.
- Require component visibility. Request a software bill of materials or equivalent dependency information, vulnerability disclosure process, supported versions, and notice of material sub-tier changes.
- Protect build systems. Ask how build credentials are separated, how privileged actions are logged, how secrets are stored, and whether supplier build access is just-in-time rather than permanently enabled.
- Verify integrity. Where feasible, verify hashes or digital signatures for software and updates against an independently obtained value or trusted key. Define how key compromise, revocation, and emergency updates are handled.
- Test update governance. Determine who can release updates, how changes are reviewed, how urgent fixes are authenticated, and whether you can delay, stage, or roll back an update.
- Flow requirements downstream. Put equivalent security, notification, provenance, evidence, and access requirements into contracts with the supplier and require the supplier to impose them on material sub-tier providers.
For high-impact software, consider isolated testing, least-privilege deployment, allow-listing, staged rollouts, independent verification, and an offline or prior-version recovery path. These measures reduce blast radius; they do not eliminate the need to understand who controls the build and signing process.
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Model disruption scenarios and prepare continuity
Translate geopolitical uncertainty into concrete scenarios. Assess both malicious compromise and non-malicious interruption.
| Scenario | Questions to answer | Preparation |
|---|---|---|
| Supplier becomes unavailable | Which processes stop, how fast, and what minimum capability must continue? | Document manual workarounds, alternate suppliers, inventory, and recovery priorities |
| Support or personnel cannot cross borders | Who can administer, repair, or troubleshoot the service from an allowed location? | Maintain regional support paths, local skills, runbooks, and tested escalation contacts |
| Updates are interrupted or untrusted | Can you continue safely, defer updates, or roll back without exposing known vulnerabilities? | Stage updates, retain validated versions, verify signatures, and define emergency approval |
| Supplier credentials are compromised | What systems can the account reach, and how quickly can access be revoked? | Use just-in-time privileges, segmentation, logging, independent identity control, and revocation drills |
| Transaction becomes unlawful or impracticable | Can you lawfully receive data, pay, export technology, or continue support? | Obtain legal advice, define suspension rights, identify alternatives, and preserve evidence of decisions |
| Sub-tier fails while the prime remains solvent | Which hidden component, region, or provider is the real bottleneck? | Require tier disclosure, concentration analysis, replacement plans, and customer notification |
For each scenario, record impact, maximum tolerable downtime, recovery time objective, recovery point objective, workaround, alternate source, dependencies of the workaround, decision authority, and exit steps. Exercise the plan with the supplier where practical. A plan that has not been tested may reveal neither the true recovery time nor the assumptions that would fail during a crisis.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Turn findings into proportionate contract terms
Contract language should reflect the dependency and the evidence gaps. Typical provisions include:
- Defined security controls for identity, privileged access, vulnerability handling, logging, backup, recovery, and secure development.
- Accurate disclosure of relevant ownership, operating locations, material subcontractors, and sub-tier changes.
- Advance notice of ownership changes, acquisitions, new material subcontractors, major hosting changes, sanctions exposure, or incidents affecting the service.
- Incident notification deadlines tied to unauthorized access, data exposure, service interruption, software integrity, and legally restricted support.
- Rights to obtain current evidence, review independent assessments, and validate remediation without granting unfettered access to unrelated confidential information.
- Requirements for signed or hashed updates, key-management safeguards, vulnerability disclosure, and emergency patch procedures for software.
- Access limitations, customer-controlled authentication, rapid revocation, return or deletion of data, and assistance with transition.
- Continuity commitments, recovery objectives, participation in exercises, and service credits or other remedies where appropriate.
- Suspension and termination rights for material control failure, unlawful performance, undisclosed sub-tier change, or unacceptable geopolitical exposure, together with an orderly exit plan.
Do not demand identical controls from every supplier. A low-access office-services provider and a supplier that can alter production software should not receive the same evidence burden. Require the controls that reduce the specific exposure you documented.
Monitor continuously and define reassessment triggers
Initial due diligence becomes stale. Set a review cadence based on criticality and change velocity, and monitor events that can alter the risk between scheduled reviews.
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- Critical, high-privilege, or hard-to-replace suppliers: use ongoing monitoring, at least annual formal reassessment, and review after material events.
- Moderate suppliers: refresh evidence on a defined cycle and when access, service scope, ownership, or sub-tiers change.
- Low-exposure suppliers: maintain basic inventory, contractual minimums, and event-driven review rather than treating them as permanently risk-free.
Triggers should include ownership or control changes, new sanctions or trade restrictions, major incidents, significant vulnerability disclosures, acquisitions, new hosting or development regions, material sub-tier changes, missed recovery tests, repeated control exceptions, and changes in your own data or access requirements. Route alerts to a named owner who can pause onboarding, restrict access, activate continuity plans, or seek legal advice.
Illustrative decision example
Suppose a supplier provides a business-critical platform, stores sensitive records, has privileged support access, relies on a separately operated hosting provider, and has no immediate replacement. The assessment should not stop at the supplier’s incorporation country or a generic security questionnaire.
- Map the platform, support path, hosting provider, update mechanism, data locations, and administrative identities.
- Obtain current ownership and management information and investigate any party able to direct operations.
- Confirm how incidents are detected, how access is revoked, how backups are restored, and whether recovery has been demonstrated for the service you use.
- Require disclosure and flow-down controls for the hosting provider and other material sub-tiers.
- Limit privileged support through customer-controlled identity, time-bound approval, segmentation, and logging.
- Document a manual operating mode, exportable data format, alternate provider or internal replacement path, and the time and cost required to use it.
- Approve only with enhanced terms and a remediation owner if the evidence supports manageable residual risk; otherwise defer approval or reduce the supplier’s access and scope.
The example illustrates the method, not a prescribed score or threshold. Your organization must set those based on its services, obligations, and tolerance.
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- Using location as a proxy for trust. Investigate actual ownership, influence, operations, laws, and access instead of assigning risk from geography alone.
- Assessing only the contracting entity. A parent, subcontractor, cloud host, component supplier, or support center may create the material dependency.
- Treating a questionnaire as certification. Require evidence, test results, technical verification, and follow-up on exceptions.
- Ignoring business continuity. Strong preventive controls do not answer how you operate if support, updates, payments, personnel, or connectivity stop.
- Accepting unknown tiers as low risk. Unknown provenance and concentration should produce an information-gap action and a decision about whether the dependency is acceptable.
- Writing legal conclusions without transaction facts. Sanctions, export controls, data-transfer rules, and disclosure obligations require jurisdiction-specific analysis.
- Failing to update the assessment. Ownership, threats, laws, technology, and sub-tier arrangements change after onboarding.
A practical implementation sequence
- First 30 days: inventory suppliers, identify critical services, classify data and access, map known sub-tiers, and assign owners.
- Days 31–60: collect ownership, provenance, legal-jurisdiction, control, incident, and recovery evidence for the highest-priority dependencies; identify unknowns.
- Days 61–90: decide treatment, negotiate proportionate terms, reduce unnecessary access, verify software integrity controls, and document continuity and exit actions.
- After 90 days: run recovery or access-revocation exercises, close remediation items, monitor changes, and reassess when trigger events occur.
The result should be a living risk record that connects supplier facts to business consequences. It gives procurement and security a defensible basis for approval, restriction, remediation, replacement, or exit when geopolitical conditions change.
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