Practice 07 / Payment boundaries
Retail & Transaction Security
Keep the payment environment clearly bounded.
The operational risk
Keep the payment environment clearly bounded.
A support login, an unnecessary network connection or an unclear payment-data flow can expand the environment your team must protect and assess.
“The payment processor handles compliance.”
Make the responsibility visible.
A processor’s responsibilities do not describe every merchant system, local connection or support arrangement around the transaction.
The B3 deliverable
What you receive
- A payment-flow and third-party access map.
- A PCI scoping readiness review coordinated with the client’s qualified assessor where needed.
- A POS isolation and remote-maintenance evidence checklist.
- A vendor responsibility matrix and commercial exclusion review.
- An actionable remediation register and assessor handoff pack.
Who this is for
Multi-location retailers, healthcare operators accepting payments and other merchant organizations.
Evidence needed to begin
- Payment-flow diagrams
- Processor and POS provider agreements
- Existing assessment records
- Network and remote-support inventory
Acceptance criteria
A result you can inspect.
Payment flows and support paths are documented; scoping questions and missing evidence have owners before assessor review.
Show us the payment-data flow, every remote-support path into it, and the evidence supporting your claim about our assessment scope.Scope this engagement →
Roles and boundaries
B3 does not issue PCI attestations or represent itself as a Qualified Security Assessor. Formal validation remains with the applicable qualified parties.
Read the buyer guide: Questions to Ask an MSP Before You Sign or Renew ↗
Before the next signature
Make the decision with someone on your side.
Start with the decision, the deadline and the evidence you need. We will define a practical scope from there.
Schedule a 20-minute scoping call →