Sector Practice · Payment & Security

Payment Systems & Security Architecture

PCI DSS Level 1 compliance, P2PE point-to-point encryption, secure gateway integration, and field-device security across public transit, utilities, and citizen services.

Payment security architecture from field device to cloud.

20+ Years Payment Security
Level 1 PCI DSS Programme Lead
P2PE Certified Architecture
The Challenge

Designing payment systems that minimise compliance scope and secure cardholder data.

Accepting card payments in public services, transit validators, and contact centres brings strict PCI DSS audit obligations. Without intentional architecture, payment scope bleeds into corporate networks, database servers, and agent desktops, dramatically raising compliance costs and vulnerability risks.

With P2PE (Point-to-Point Encryption) and Hardware Security Modules (HSMs), clear cardholder data is encrypted at the exact point of interaction and decrypted only in certified Hardware Security Environments, isolating your merchant network from PCI scope.

Representative Engagements
  • National Transport Authority (NGT P2PE Architecture)
  • Abtran (Level 1 PCI DSS Contact Centre IVR)
  • Electric Ireland & ESB Payment Gateways
  • Irish Water Secure Customer Channels
Capabilities

Payment Security Workstreams

01 / WORKSTREAM

P2PE Point-to-Point Encryption

Architecting P2PE encryption boundaries across transport validators and POS devices so clear PAN data never enters merchant networks or back-office clouds.

In practice: Leading P2PE architecture design for NTA's Next Generation Ticketing validators across national bus and rail fleets.
02 / WORKSTREAM

PCI DSS Level 1 Compliance

Design, network segmentation, HSM key management, logging, and QSA audit preparation for Level 1 service providers processing millions of card transactions annually.

In practice: Delivered and maintained Level 1 PCI DSS certification for Abtran's contact centre payment processing platforms.
03 / WORKSTREAM

Field Device & Hardware Security

Chain-of-trust architecture for field devices: HSM master key generation, signed firmware boot verification, tamper-evident seals, and remote certificate lifecycle.

In practice: Designing secure key injection and hardware attestation workflows for public transport field validators.
04 / WORKSTREAM

IVR & Contact Centre Payment Isolation

DTMF suppression, IVR payment transfer segmentation, and agent desktop isolation so contact centre staff never see or hear cardholder digits.

In practice: Architecture of secure payment IVR for major Irish utilities, completely removing call centre desktops from PCI scope.
Work With Us

Discuss your payment security & PCI compliance

Whether you need P2PE architecture for transit field devices, PCI DSS Level 1 guidance, or secure payment gateway integration, we'd like to hear from you.