Supplier Relationship Management Policy

Sets how suppliers are classified, assessed, contracted, monitored and offboarded so that supplier access to information and services stays controlled.

SXL-A25Policy1,457 words 7 min readOwner: Head of Procurement
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Template draft. Replace everything in [square brackets] with your own decision, delete what does not describe what you really do, and approve it through your own document control. It is not legal advice and does not make an organisation compliant or certified.

1. Purpose

This policy makes sure that information security and privacy risks created by suppliers are identified, agreed in contracts, monitored for the length of the relationship and removed when the relationship ends. A supplier is a risk to the Organisation even when the supplier is trusted.

2. Scope

The policy covers every external party that provides goods, services, software, cloud services, outsourced processing or staff to the Organisation, or that can reach its information, systems or premises.

  • In scope: IT and cloud providers, software vendors, consultants, contractors, outsourced support, data processors, facility and cleaning services with physical access, resellers and the suppliers of those suppliers (the ICT supply chain).
  • Out of scope: customers acting as customers, regulators, and one-off purchases of low-risk goods that involve no information and no access, as set out in the tiering table.

3. Terms and Definitions

TermMeaning
SupplierAny external party that provides products or services to the Organisation.
Critical supplierA supplier whose failure or breach would seriously disrupt services or expose Confidential or Restricted information.
Data processorA supplier that processes personal data on behalf of the Organisation.
Sub-contractor or fourth partyA party engaged by the supplier to deliver part of the service.
Supplier security assessmentA structured review of a supplier's controls before engagement and during it.
Exit planThe steps to move or stop a service and recover or delete data.

4. Roles and Responsibilities

RoleResponsibilities
Head of Procurement (document owner)Owns this policy and the supplier register, ensures no contract is signed without the required checks.
Supplier relationship ownerThe business manager accountable for each supplier: requirements, performance, reviews and exit.
Information security managerSets assessment criteria, assesses suppliers, reviews evidence, approves access and security clauses.
Data protection officerReviews processing terms, transfers and assessments for suppliers handling personal data.
LegalDrafts and approves contracts, liability, audit rights, termination and confidentiality terms.
FinanceDoes not pay a new supplier until it appears on the approved supplier list.
SupplierMeets contract security terms, reports incidents and changes, and flows requirements to its sub-contractors.
ActivityResponsibleAccountableConsultedInformed
Classify the supplierSupplier relationship ownerHead of ProcurementInformation security managerLegal
Assess supplier security and privacyInformation security managerHead of IT SecurityData protection officer, supplier ownerProcurement
Agree contract termsLegalHead of ProcurementInformation security manager, DPOSupplier relationship owner
Grant and remove supplier accessSystem ownerSupplier relationship ownerInformation security managerService desk
Review performance and securitySupplier relationship ownerHead of ProcurementInformation security managerManagement
Handle a supplier incidentIncident response leadHead of IT SecuritySupplier relationship owner, legalDPO, management
Offboard the supplierSupplier relationship ownerHead of ProcurementSystem owner, DPOFinance

5. Policy Statement

5.1 Classification and due diligence

  1. Every supplier must be classified before engagement, using the tiers in the table, and recorded in the supplier register with owner, service, data accessed, contract dates and review date.
  2. Due diligence before contract is in proportion to the tier and covers security controls, privacy practice, financial stability, ownership, sanctions screening, location, incident history and, for critical suppliers, continuity arrangements.
  3. Procurement must not start work or payment for a supplier that has not completed the checks for its tier.
TierDefinitionDue diligenceReview frequency
CriticalHandles Confidential or Restricted information, runs a Tier 1 service, or privileged access to productionFull questionnaire, evidence review, independent report, on-site or remote audit if justified[Every 6 months] performance; [12 months] full reassessment
HighHandles Internal data or has network or system accessQuestionnaire and evidence review[12 months]
MediumLimited access to non-sensitive information or premisesShort questionnaire and signed confidentiality terms[24 months]
LowNo access to information, systems or premisesStandard contract termsAt renewal

5.2 Contract requirements

Contracts and statements of work with Critical and High suppliers must contain, at least, the following clauses. Legal records any gap and the risk accepted.

  • Scope of services, the information and systems the supplier may access, and the purpose for which they may use them.
  • Confidentiality, return and secure deletion of information at the end, and proof of deletion.
  • Security controls the supplier must keep, consistent with the Organisation's policies, including access control, encryption, logging, patching, vulnerability management, background checks for people with access and training.
  • Personal data terms: processing only on instruction, sub-processor approval, assistance with data subject requests and with breach handling, and transfer limits, consistent with the Digital Personal Data Protection Act, 2023 and its Rules [confirm the current requirement] and applicable law in each jurisdiction where the Organisation operates (such as the EU General Data Protection Regulation).
  • Incident notification to the Organisation within [24 hours] of detection, or earlier where the Organisation needs to report in [6 hours] under the CERT-In Directions of 28 April 2022 [confirm the current requirement], with cooperation in investigation.
  • Right to audit or to receive independent assurance reports, and to carry out reasonable security testing with agreement.
  • Sub-contractors only with consent, and with the same security terms flowed down.
  • Service levels, continuity and recovery commitments, and exit assistance.
  • Termination rights for security breach, and clear responsibility for costs of breach.

5.3 Supplier access

  • Supplier access to systems and data is granted under the Access Control Policy: least privilege, named individuals, multi-factor authentication, time-limited accounts, access only through approved gateways and logging of activity.
  • Access is requested by the supplier relationship owner, approved by the system owner, and reviewed [quarterly]. It is removed within [1 working day] of contract end or when the person leaves the supplier's team.
  • Supplier staff with access to Confidential data must be covered by background verification at the supplier, as the contract states, and must sign or be bound to the Organisation's confidentiality terms.
  • Information shared with suppliers is limited to what is needed and is classified and labelled under the Information Classification and Handling Policy.

5.4 Monitoring and review

  • The supplier relationship owner reviews performance against service levels, incidents, changes of ownership or location, sub-contractors and security evidence at the frequency set by tier.
  • The information security manager reviews assurance evidence, such as audit reports, penetration test summaries and certification scope, and follows up gaps with the supplier within an agreed time.
  • A supplier with repeated failures, a serious incident or a significant unresolved finding is placed on a watch list, with an improvement plan; failure to improve leads to replacement.
  • Changes by the supplier that affect security, such as moving data to another country or changing a sub-processor, must be notified and reassessed before they apply.

5.5 Supply chain risk

  • For Critical services, the supplier relationship owner must understand the main sub-contractors and the software components used, and ask the supplier for a software bill of materials or equivalent where the supplier writes code for the Organisation.
  • Concentration risk, where one supplier supports several critical services, is reviewed yearly and noted in the risk register. Alternative suppliers or exit routes are identified for Critical suppliers.

5.6 Offboarding

  1. NoticeGive or receive notice and activate the exit plan.
  2. Return and deleteRetrieve information, remove access, collect assets and keys, and get written proof of deletion within [30 days].
  3. CloseUpdate the register, close accounts and review lessons learned.

5.7 Supplier incidents

The supplier must report incidents as the contract states. The Organisation handles the incident under the Information Security Incident Management Policy, including notifying customers and authorities where needed, and records the supplier's root cause and corrective actions.

6. Compliance and Monitoring

CheckPerformed byFrequency
Reconciliation of invoices and payments against the supplier registerFinance and procurement[Quarterly]
Review of supplier access listsSystem owners[Quarterly]
Review of tier and assessment currencyProcurement[Quarterly]
Sample of contracts against required clausesLegal[Yearly]
Internal audit of this policyInternal audit[Yearly]

Detailed steps and forms are in the Supplier Relationship Management Procedure.

7. Measures

MeasureTarget
Suppliers in the register with a tier and an owner[100%]
Critical and High suppliers assessed within the review period[100%]
Contracts containing the required clauses[95%]
Supplier access removed within [1 working day] of contract end[100%]
Supplier findings closed on time[90%]

8. Records and Evidence

  • Supplier register, assessments, contracts and review notes, kept for the contract term plus [6 years].
  • Supplier access approvals and reviews, kept [3 years].
  • Incident and performance records, kept [3 years].

Annexure A: Supplier security assessment

AreaQuestionAnswer and evidence
GovernanceDocumented security policies and named security lead?
AssuranceIndependent report or certification, scope and date?
AccessMulti-factor authentication, least privilege and joiner-mover-leaver controls?
DataEncryption, location, segregation, retention and deletion?
PeopleBackground checks, confidentiality and training?
IncidentsProcess and notification time?
ContinuityBackup, recovery targets and testing?
Sub-contractorsWho are they and how are they controlled?

Annexure B: Supplier register

SupplierServiceTierOwnerData accessedContract endLast reviewNext review

9. Exception

Exceptions to this document are allowed only where compliance is not practicable and the risk has been assessed. A request must state what is to be excepted, why, the risk it creates, the compensating controls, and an end date no later than [6 months]. It is approved in writing by the document owner and the risk owner, recorded in the exceptions register, and reviewed at the end date. An exception does not change the document.

10. Enforcement

Compliance is monitored through internal audits, management review and routine checks by the document owner. Non-compliance is reported through the incident or non-conformity process and handled under the organisation's disciplinary procedure, and under the terms of any contract for people who are not employees. Serious or repeated non-compliance may lead to loss of access and, where the law is broken, to referral to the authorities.

11. Review

This document is reviewed at least every [12 months], and when there is a significant change to the organisation, its systems, its risks or the law, or after an incident that shows it was not effective. Each review is recorded in the revision history.

ISO/IEC 27001:2022 references

ReferenceTitle
A.5.19Information security in supplier relationships
A.5.20Addressing information security within supplier agreements
A.5.21Managing information security in the ICT supply chain
A.5.22Monitoring, review and change management of supplier services
A.5.23Information security for use of cloud services
A.5.31Legal, statutory, regulatory and contractual requirements
6.1.2Information security risk assessment
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