PCI DSS 12.8.5: Document Third-Party Service Provider Responsibility Ownership
Managing third-party service providers (TPSPs) is critical to PCI DSS compliance, but unclear responsibility ownership creates dangerous gaps. PCI DSS 12.8.5 requires you to maintain documented evidence of which security requirements each TPSP is responsible for, eliminating ambiguity about who owns what. This control prevents compliance failures by ensuring every requirement is assigned and tracked.
What this means
Your organization must maintain comprehensive documentation that clearly identifies which PCI DSS requirements are the responsibility of each third-party service provider you work with. This includes payment processors, cloud providers, managed security service providers, and any other vendors handling cardholder data or security functions. The documentation serves as a responsibility matrix—a single source of truth showing the mapping between PCI DSS requirements and TPSP ownership, preventing gaps where requirements fall through the cracks or are assumed but not verified.
How to comply
- 1.Create a comprehensive inventory of all third-party service providers that access, process, transmit, or store cardholder data or security-related systems
- 2.Document each TPSP's specific role and functions within your payment card environment
- 3.Map each PCI DSS requirement to the responsible party—your organization or the specific TPSP
- 4.Establish a responsibility matrix or RACI (Responsible, Accountable, Consulted, Informed) chart showing ownership for all 12 PCI DSS requirement categories
- 5.Obtain written agreements from TPSPs confirming their responsibility for assigned requirements
- 6.Review and update the responsibility documentation at least annually or when TPSP relationships change
- 7.Ensure all stakeholders understand and acknowledge their assigned responsibilities
- 8.Maintain evidence of TPSP confirmation of their security obligations
Evidence auditors look for
- Responsibility matrix or RACI chart mapping PCI DSS requirements to TPSPs
- TPSP contracts or service agreements explicitly stating security requirement ownership
- Letters of attestation from service providers confirming responsibility for assigned requirements
- Internal documentation showing which organization team owns responsibilities not assigned to TPSPs
- Change logs documenting updates to responsibility assignments when vendor relationships change
- Evidence of annual review and re-confirmation of TPSP responsibilities
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch automatically maintains your TPSP responsibility matrix with real-time updates, sends reminders for annual re-confirmation, and flags gaps in coverage—ensuring audit-ready documentation without spreadsheet sprawl.
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