GV.SC-02 supply chain roles: requirements and evidence

GV.SC-02 supply chain roles and responsibilities: what the requirement asks for

When an assessor, customer or board asks who owns supplier cyber risk, GV.SC-02 is the requirement that expects a clear answer. GV.SC-02 is a Subcategory of the Cybersecurity Supply Chain Risk Management (GV.SC) Category, which sits in the Govern Function of NIST CSF 2.0. Paraphrased, its outcome is that cybersecurity roles and responsibilities for suppliers, customers and partners are set, communicated and coordinated, both inside the organization and with the outside parties it depends on or serves. The requirement is short, but it is hard to meet because ownership of supplier risk is usually split. Security assesses the controls, procurement signs the contracts, legal negotiates the terms, and business owners decide to use the service. When each group assumes another one holds the risk, nobody is accountable when a supplier fails.

Meeting the outcome starts with a decision: name the roles accountable for cybersecurity supply chain risk management and record who does what for each supplier tier. NIST's Implementation Examples for GV.SC-02 describe the usual building blocks, including a responsibility matrix, C-SCRM duties added to position descriptions, shared responsibilities written into third-party agreements, and rules for what information is shared with suppliers and how it is reported back. Confirm with your own legal and procurement teams which of these already exist, because a matrix that no contract references will not satisfy an assessor. Check that each named owner knows the duty and has the authority to act on it.

Gaps usually show up in the handoffs. Ask whether the matrix covers the supplier's responsibilities as well as your own, such as notifying you of an incident, and your customers' responsibilities where you act as a supplier to them. Confirm how the matrix is versioned, reviewed and approved, and who keeps the record of changes. An assessor will look for evidence that roles were communicated and that the people named have accepted them, so keep the signed matrix, the position description updates and the agreement clauses together. Your independent auditor or assessor will decide whether that evidence is sufficient.

Which teams, suppliers and records fall under GV.SC-02

GV.SC-02 only works once the organization decides who is inside its supply chain risk work and who sits outside it. The cards below cover the internal roles, supplier groups and shared boundaries that decide where accountability lands. Most of them depend on which suppliers GV.SC-04 ranks as critical, so treat that ranking as the first input.

Internal roles holding C-SCRM accountability

Name the executive who owns cybersecurity supply chain risk and the managers who run the day-to-day work. GV.SC-02 expects these roles to be named, not implied, so check that each one appears in a written responsibility matrix and in the position descriptions of the people who hold it. Confirm that the accountable role has authority to stop or condition a supplier onboarding, not only to advise on it.

Business owners of critical suppliers

Each critical supplier needs a named business owner who understands the service it provides and the impact of its failure. This person usually approves the relationship, tracks its performance and raises concerns to the C-SCRM lead. Check that every supplier ranked as critical has one owner on record, and that the owner's duties are written into their role description.

Procurement and legal responsibilities

Procurement controls when a supplier enters the organization, and legal controls the contract terms that carry security obligations. Both functions hold the points where cybersecurity duties become enforceable. Confirm that procurement cannot sign a supplier without a security review record, and that legal has a standard set of supplier security clauses to apply by criticality.

Supplier and partner population in scope

Decide which third parties count as suppliers for this purpose, including software vendors, cloud providers, managed service providers, contractors and data processors. The list must come from a complete inventory rather than from memory, because GV.SC-02 responsibilities can only be assigned to parties you have recorded. Check that the inventory names each party, its service, and the internal owner responsible for it.

Customers and partners sharing responsibility

Some security duties sit with customers or partners, such as configuring access in a shared platform or reporting an incident that affects both parties. GV.SC-02 expects these shared responsibilities to be defined in agreements, not assumed. Review each customer and partner relationship that involves shared systems or data, and record which party performs each duty and how information moves between them.

C-SCRM program boundary from GV.SC-01

The boundary set under GV.SC-01 defines which business units, systems, suppliers and decisions the C-SCRM program covers. Roles under GV.SC-02 must fall inside that boundary or the responsibility matrix will leave gaps. Check that the boundary document names the business units and supplier categories in scope, and that every role you assign in the matrix maps to a unit inside that boundary.

How an assessor tests GV.SC-02

This table sets out how an assessor typically tests GV.SC-02, what evidence they ask for at each step, and where organizations most often fall short. Read it as a preparation checklist: each row is a test step, and the evidence and findings columns show what to have ready before fieldwork begins.

Test step	Evidence the assessor asks for	Common finding
Interviews with named role holders	Named individuals who own supplier risk, their stated duties and how they describe handoffs to procurement, legal and security	Role holders cannot describe their supplier duties, or names in documents no longer match current staff
Review of role documentation	Charters, governance terms of reference and a written statement of who is accountable for C-SCRM decisions	Accountability is named at a committee level only, with no individual owner for specific supplier decisions
Responsibility matrix review	A matrix covering internal teams and the supplier, customer or partner responsibilities for each key activity	The matrix stops at internal teams and does not show which duties sit with suppliers or partners
Position description review	Job descriptions or role profiles that include C-SCRM duties for procurement, security, legal and business owners	Supplier risk duties are absent from position descriptions, so accountability depends on informal practice
Third-party agreement review	Contract clauses or schedules that assign security duties to the supplier and set reporting and information sharing rules	Shared responsibilities are described in general terms, with no named contact or reporting timeline
Supplier sampling	A sample of supplier relationships with evidence that roles were communicated to the supplier and are being used in practice	Roles were named internally but never communicated to the supplier, so the supplier does not know its duties
Information sharing rules	Documented rules on what suppliers must share, with whom, and through which channel, along with records of use	Information sharing rules are missing or exist only in an email thread that no one follows

Implementing GV.SC-02 in sequence

This sequence turns the GV.SC-02 outcome into a named accountable role, a responsibility matrix covering internal teams and supplier tiers, job duties, contract language, information sharing rules and a communicated record that people actually use. Each step closes with an artifact you can show an assessor.

Name the accountable C-SCRM role
Start by naming one person who is accountable for cybersecurity supply chain risk management and a deputy who covers for them. Confirm the role with the executive who owns the risk decision, and record the appointment in a short charter that states the role's authority to set supplier requirements and escalate concerns. The output is a signed charter or appointment memo that names the role holder, the deputy, and the teams that must consult them. Ask whether procurement, legal, and business owners accept this authority in writing before you move on.
Inventory internal teams and supplier tiers
List every internal function that touches suppliers, including procurement, legal, security operations, IT operations, privacy, finance and the business units that own key services. Group suppliers into tiers by criticality, using the data they handle, their access to your systems and the importance of their service. This work draws on the supplier records from GV.SC-04, so confirm those records exist before you rely on them. The output is a list of internal stakeholders and supplier tiers, each tied to a named owning team.
Build the responsibility matrix
Create a responsibility matrix that assigns each supply chain activity to a single accountable owner, with a clear responsible party and consulted or informed groups. Cover the lifecycle from supplier selection and contract terms through monitoring, incident handling and offboarding. For each supplier tier, record what the supplier must do, such as patching, reporting, or providing evidence, and what your organization does in return. Validate the matrix with each owning team in a working session, then approve it through the C-SCRM governance forum. The output is an approved matrix with one accountable owner per activity and no unassigned rows.
Add C-SCRM duties to position descriptions
Translate the matrix into job duties by updating position descriptions and objectives for the people who carry out assigned activities. Procurement managers, contract owners, vendor risk analysts and business service owners each need written duties that reflect their part of the matrix. Coordinate with HR so the updates follow your normal change process and are reflected in performance goals. The output is revised position descriptions or role cards with the C-SCRM duties named, plus a list of employees who acknowledged them. Ask HR what evidence they keep for role changes.
Write shared responsibilities into third-party agreements
Update supplier agreements so that each party's responsibilities match the matrix. Describe which security tasks belong to the supplier, which remain with your organization, and which are shared, such as joint incident handling or access reviews. Use your legal team to draft language that reflects these divisions and aligns with the supplier requirements under GV.SC-05. Where existing contracts cannot change quickly, record the gap and a remediation plan. The output is a set of contract clauses or addenda mapped to matrix rows, along with a register of contracts still awaiting revision.
Set information sharing and reporting rules
Define what information suppliers must share with your organization, how often, through which channel, and who receives it. Include rules for security incident notifications, vulnerability information, changes to subprocessors or hosting locations, and access to audit evidence. Set the rules for what your organization shares with suppliers as well, such as threat intelligence or vulnerability details that affect their systems. Limit distribution to people with a documented need to know, and record each rule against the matrix. The output is a sharing and reporting standard with named recipients and a log of which suppliers have accepted it.
Communicate and maintain the matrix
Publish the approved matrix, charter, and sharing rules in your controlled knowledge base, and send targeted briefings to each owning team and to the suppliers who must follow the rules. Keep version history and approval records so you can show who changed an assignment and when. Schedule a review trigger for changes in organization structure, supplier tiers or contracts, and confirm the review cadence with the governance forum. The output is a published, versioned matrix with recorded acknowledgments from internal owners and key suppliers. Ask whether any supplier must formally acknowledge the rules before data sharing begins.

Evidence that passes GV.SC-02 and how to keep it current

An assessor testing GV.SC-02 looks for records that name who owns supplier cybersecurity risk, show what each party must do, and prove people know it. The six artifacts below connect those answers, and each one goes stale in a different way, so each needs its own review trigger between audits.

Named role assignment and authority

A written record that names the individual accountable for C-SCRM, the authority that person holds to approve or stop a supplier engagement, and the deputies who act when that person is unavailable. Assessors check that the named role appears in the governance charter and matches the organization chart. Keep it current by reviewing the assignment whenever the named person changes role, leaves, or when a reorganization moves supplier decisions to another function. Confirm that the authority is written, not implied.

Dated responsibility matrix

A matrix that assigns each supplier-related activity, such as due diligence, contract review, monitoring and offboarding, to a responsible, accountable, consulted or informed party, both inside the organization and at each key supplier. The matrix carries an issue date and version history so an assessor can see what changed and when. Review it when a critical supplier is added, a supplier is replaced, or a process owner changes. Illustrative example: a matrix that shows procurement owning the contract clause while security approves the access scope.

Updated position descriptions

Job descriptions for procurement, vendor management, IT operations and legal that include the C-SCRM duties each role performs, such as reviewing supplier security evidence before renewal or reporting a supplier incident within an agreed window. Assessors compare these descriptions with the responsibility matrix to find gaps. Update them during hiring, role changes and annual role reviews, and check them whenever a new supplier category or regulated service is introduced. Ask HR which version of each description was in force on a given date.

Supplier agreement clauses on shared responsibility

Contract language that states which security duties stay with the supplier, which stay with the organization, and where the two overlap, such as access reviews for shared platforms or patch responsibility for managed components. Assessors look for these clauses in the signed agreements, not only in templates. Review the clauses when a supplier changes its service model, adds a subcontractor, or moves hosting to a new region. Confirm with legal that the clauses survive renewals and amendments.

Information sharing and reporting rules

A documented set of rules for what suppliers must send the organization, how quickly, to which named role, and what the organization shares back, such as threat indicators or changes to a shared architecture. Include the channel, contact list and format. Assessors test whether the rules are known and followed during an exercise or real event. Revise the rules when incident response contacts change, when a regulator sets a new notification window, or after a supplier reporting failure is reviewed.

Communication and acknowledgment records

Evidence that the roles, matrix, clauses and reporting rules reached the people and suppliers who depend on them, such as training attendance, signed acknowledgments from supplier account managers and read receipts for policy updates. Assessors sample these records to confirm that roles are communicated, not just written. Refresh acknowledgments after each material change to the matrix or clauses, and set a recurring reminder to re-confirm contacts for critical suppliers. Check that acknowledgments record the version of the document accepted.

Setting information sharing rules with suppliers

A supplier information sharing rule should answer four questions in writing: what security information the supplier sends to the organization, who receives it, how quickly it must arrive after an event, and what the organization shares back. The GV.SC-02 Implementation Examples include setting information sharing and reporting rules with suppliers, so this is the point where the responsibility matrix becomes operational. Without these rules, a supplier may detect an incident on its platform and report it days later through a channel nobody monitors. For each critical supplier, write the rule into the contract or the operating agreement and name a role on each side, not only a company.

Start with the inbound flow. List the signals the supplier must send, such as security incident notices, vulnerability advisories affecting delivered software, changes to hosting locations or subprocessors, and certificate or access changes. For each item, define the recipient role, the delivery channel and the deadline measured from the supplier's own discovery. The outbound flow matters too: state what the organization will share, such as indicators of compromise, confirmed impacts on the supplier's service, or requests for logs. Decide how sensitive material is exchanged and who may read it. Then have both parties test the path with a tabletop exchange, because a contact list that has not been used is a common failure point.

Confirm the mapping before relying on it. NIST's CSF 2.0 Reference Tool maps GV.SC-02 to SP 800-53 Rev. 5.2.0 controls SR-2, SR-3 and SR-5, to ISO/IEC 27001:2022 clause 5.3 and Annex A controls 5.2 and 5.4, to SP 800-171 Rev. 3 requirements 03.17.02 and 03.17.03, and to CIS Safeguard 15.4. Check each entry in the Reference Tool against the version of the framework your auditor or customer uses. The Core transition spreadsheet also states that GV.SC-02 absorbs part or all of CSF 1.1 ID.AM-6, so teams that tracked that item under asset management should move their supplier reporting evidence to this Subcategory and confirm the coverage with their own assessor.

What meeting GV.SC-02 costs in money and effort

This table lists the cost components of assigning supply chain roles and keeping responsibility records current, who is paid for each, and whether it is one-time or recurring. Read the sizing driver column to see what raises or lowers each cost, and use the final row to shape a written quote. No figures are stated because none were supplied for this topic.

Cost component	Who carries the cost	One-time or recurring	What drives it up or down
Accountable owner time	Named executives and C-SCRM leads	Recurring	Number of owners named, and how often responsibilities change after reorganizations
Legal and procurement time	Legal counsel and procurement staff	One-time, then recurring at renewal	Number of critical suppliers with contracts that need shared-responsibility clauses or information sharing terms
HR time for position descriptions	HR and hiring managers	One-time per role, then on change	Count of roles that gain C-SCRM duties and how many job families the duties touch
Tooling for matrices and version control	Internal platform or IT team	One-time setup, recurring hosting and upkeep	Whether a wiki or document system with version history already exists, and how many matrices are maintained
Evidence upkeep and periodic review	Program owner and business unit leads	Recurring	Frequency of review set by the organization, and the size of the supplier population covered by each matrix
Supplier coordination and information sharing rules	Supplier management and security staff	One-time to define, recurring to run	Number of suppliers that need reporting channels, and how many use different communication methods
External review or assessor sampling	Independent auditor or assessor, paid by the organization	Recurring at each assessment	Assessment scope, the number of responsibility records sampled, and the availability of current evidence
License spend	Software vendors	Recurring when proprietary tools are used	Self-hosted open-source tools can remove per-seat license fees for matrix and version control tooling, though hosting and staff time remain
Written quote items to request	Implementation partner or internal team	Stated per item in the quote	Ask for the scope in writing, deliverables, the roles covered, the supplier count assumed and the hours or fees for each item

Who owns GV.SC-02 work and who should not

Your organization owns its controls, so the decisions behind GV.SC-02 stay internal. Leadership names the people accountable for cybersecurity supply chain risk, decides how those duties map onto existing job roles, and approves the responsibility matrix that states who does what for each supplier, customer and partner. Internal staff also sign the third-party agreements that set shared responsibilities and information sharing rules, because the contracting authority rests with the business.

Naming accountable roles: Confirm a named owner for C-SCRM and deputies for each business line, and record the reporting line to executive leadership.
Owning the matrix: Keep the responsibility matrix under document control, with a named editor and an approval record for every change.
Writing duties into position descriptions: Add supply chain risk tasks to the job descriptions of procurement, legal, security and business owners.
Signing agreements: Ensure contracts state which party handles vulnerability reporting, incident notification and information sharing.
Setting reporting rules: Decide what suppliers must send you, how quickly, and through which channel.

Check that every responsibility in the matrix has one named internal owner, and that the people named have accepted the duty in writing.

Where GV.SC-02 programs usually fall short

Most GV.SC-02 gaps are not missing documents. They are roles that stop at the organization's own walls, duties that never reach contracts or job descriptions, and responsibilities that go stale when suppliers or structures change. Each card below names one gap, why it weakens the outcome, and the action that closes it.

Roles never told to suppliers

Internal owners for supplier cybersecurity are often named in a policy that no supplier ever sees. The subcategory expects roles for suppliers, customers and partners to be communicated and coordinated, not only assigned inside the organization. Check whether each critical supplier can name its counterpart on your side and whether that counterpart is listed in onboarding material. Closing action: send each critical supplier a one-page contact sheet with the accountable owner, the escalation path and the date it was last confirmed.

Matrices covering only internal teams

A responsibility matrix that lists security, legal and procurement but leaves out the supplier column leaves the most important split of duties undocumented. Each supply chain risk activity, such as vetting a new vendor or reviewing a software bill of materials, needs an owner on both sides of the relationship. Check whether every row has a supplier or partner entry where the activity depends on them. Closing action: add a supplier column to the matrix and assign at least one named counterpart to each row that touches an external party.

Supplier duties missing from contracts

Responsibilities that exist only in an internal matrix cannot be enforced. Shared duties such as reporting timelines, vulnerability notification and evidence delivery belong in third-party agreements, where the supplier has accepted them. The GV.SC-02 implementation examples call for defining shared responsibilities in these agreements. Check whether your standard terms list the supplier's duties by name or leave them as general security language. Closing action: build a clause library that maps each internal responsibility to a contract clause and apply it to the next renewal or new agreement.

Position descriptions left unchanged

Supply chain risk duties often sit with people whose job descriptions never mention them. When a procurement lead or product owner is accountable for vendor security reviews, that accountability should appear in the role itself, or it tends to lapse when staff change. Check a sample of job descriptions for the roles named in your matrix and compare them. Closing action: add a short C-SCRM duties section to each affected position description and record the change with HR and the role owner.

No rule for supplier incident reporting

When a supplier is breached, the organization needs to know who receives the notice, within what window and who decides the next step. Without a documented reporting rule, the first hours of a supplier incident are spent finding contacts. The GV.SC-02 guidance covers information sharing and reporting rules with suppliers, so the rule belongs in both the matrix and the agreement. Closing action: write a reporting rule that names the internal receiver, the supplier's contact and the information the supplier must provide, then test it with one tabletop exercise.

No review trigger for changes

Responsibilities drift after a reorganization, a supplier acquisition or a new critical service. A matrix that was accurate at approval can assign duties to a team that no longer exists. Set explicit triggers for review, such as a change in organizational structure, a new critical supplier, a supplier change of control or a staff departure in a named role. Closing action: add the triggers to the matrix's document control section and assign an owner to run the review after each trigger.

Questions buyers ask about GV.SC-02 cost, effort and help

How much effort does GV.SC-02 take to implement?

The effort depends mainly on how many suppliers, customers and partners your organization exchanges security responsibilities with, and how many internal teams already own a piece of that work. GV.SC-02 is not a single deliverable. It involves naming accountable roles, building a responsibility matrix, adding supply chain duties to position descriptions, writing shared responsibilities into third-party agreements, and agreeing information sharing rules with suppliers. Each of these touches procurement, legal, risk, security and business owners. Organizations with a small supplier base and a clear security function usually need less effort than those with many critical suppliers spread across business units. Ask any partner to break the effort down by these components in a written scope before work starts.

Can we implement GV.SC-02 in-house without outside help?

Yes, many organizations do this internally, because GV.SC-02 is largely a governance and documentation outcome rather than a technical build. The work needs someone who understands your supplier landscape, your contracts and your internal reporting lines. Internal teams are often weakest on the cross-functional part: getting procurement, legal and business owners to agree on who does what, and then keeping those agreements current. An outside partner can help by preparing the matrix, drafting role language and organizing the evidence, but the organization must own the decisions. Outside help is most useful when internal teams lack time or have not handled supplier responsibility questions before.

How long does GV.SC-02 work typically take?

No duration figure is supplied for this outcome, so treat any timeline as something to confirm rather than assume. The duration is driven by how many roles need to be named, how many position descriptions need changes, how many third-party agreements need shared responsibility language, and how long approvals take in your organization. Organizations with existing role catalogs and standard contract templates generally move faster than those starting from undocumented practice. Ask a prospective partner for a written timeline tied to the agreed scope, with milestones for role decisions, matrix sign-off and supplier communication.

What does GV.SC-02 need from our internal staff?

The work needs decision-makers who can assign accountability, not just reviewers. Typically this includes an executive sponsor who will confirm the accountable owner for supply chain cybersecurity, procurement leads who manage supplier onboarding and renewals, legal staff who maintain contract language, and security and risk staff who define what suppliers must do and report. Business owners of critical services also need to confirm which supplier activities they depend on. Staff time is needed for workshops, reviewing draft matrices and checking that position descriptions match the agreed duties. Ask the partner to name the internal roles required and the hours each review will likely take.

Does NIST certify that we comply with GV.SC-02?

No. NIST does not certify organizations, products or services against the CSF, and it does not offer endorsements or plans for a conformity assessment program. The CSF is a voluntary framework, so showing alignment with GV.SC-02 means producing your own evidence, such as named roles, a responsibility matrix and signed agreements, and then having a customer, internal audit or an independent assessor review it. Any party who claims to certify CSF compliance should be questioned about what they actually issue and who stands behind it. An implementation partner can prepare systems and evidence, but only an independent auditor or assessor can issue a report on your controls.

Which parts of GV.SC-02 are worth outsourcing?

Outsource the parts that need specialist preparation and that your team does not run often. Common candidates include drafting the responsibility matrix from your current supplier and contract records, writing standard shared-responsibility clauses for third-party agreements, and designing information sharing and reporting rules with suppliers. Keep the decisions in-house: who is accountable, which suppliers are critical, and what risk the business accepts. Outside help is also useful for gathering evidence in an organized form so an assessor can trace each role to a document. Make sure the scope names each deliverable, owner and acceptance step in writing before any work begins.

How DeployOpen prepares GV.SC-02 roles and evidence

DeployOpen works on GV.SC-02 supply chain roles and responsibilities as implementation work inside the client's own infrastructure. We prepare the systems, documents and records that show who owns supplier risk and how responsibilities are shared, while the organization keeps ownership of its controls and independent assessors decide whether the evidence meets their criteria.

How we scope

Engagements are fixed-scope, with the roles, supplier groups and documents in scope agreed in writing before work starts.
The written scope names which internal roles, customer-facing functions and supplier relationships the responsibility work will cover.
Ask us to confirm in the scope which owners, approvers and reviewers must sign off each responsibility matrix.

How we build

We set up the responsibility matrix and information sharing rules in the self-hosted platforms the client already operates or agrees to add.
We help draft C-SCRM duties for position descriptions and shared-responsibility clauses for third-party agreement templates.
Platform permissions are configured so each named role can edit, review or approve only the records it owns.

How we hand over

Handover includes the written matrix, configuration records, version history settings and a short guide for keeping roles current.
We document how supplier reporting rules are recorded, reviewed and retired, so the evidence trail is readable by an assessor.
Ask for a list of every artifact delivered and the named owner who accepts each one at handover.

How we support

Ongoing support, upgrades and periodic reviews of the responsibility records are available as a retainer.
Retainer scope should state how often roles are re-checked after staff changes, reorganizations or new supplier onboarding.
Assessment decisions stay with the client's chosen independent auditor or assessor, and we prepare material for their review.