PCI DSS 4.0.1 and Payment Security Advisory Services

PCI DSS Version 4.0.1 Assessments

Our primary service offering focuses on PCI DSS Version 4.0.1 assessments, where we conduct a detailed evaluation of your organisation’s systems, processes, and controls. This comprehensive review ensures full alignment with the latest PCI DSS standards, supporting the secure handling of payment card data and reducing the risk of data breaches.

3-D Secure (3DS) Readiness and Compliance

As part of our broader payment security services, we offer 3-D Secure (3DS) readiness and compliance assessments. Our specialists evaluate your authentication systems and transaction flows to ensure they meet EMV 3-D Secure requirements, supporting frictionless payments while maintaining strong customer authentication (SCA). We help you validate integration between merchants, acquirers, and issuers, ensuring your 3DS implementation aligns with PCI DSS and PSD2 obligations—enhancing fraud prevention and customer trust across your payment ecosystem.

PCI DSS Gap Analyses for New Adopters

For organisations newly engaging with PCI DSS, we provide gap analyses designed to identify areas requiring enhancement to meet Version 4.0.1 requirements. Our team will work with you to understand your current security posture, implement required improvements, and establish practices that align with PCI DSS’s rigorous data protection standards.

Pre-Audit Assessment

Ahead of formal audits, we offer pre-audit assessments to identify potential compliance issues early. This proactive measure enables your organisation to address weaknesses before the official audit, ensuring a smoother compliance journey and reducing the likelihood of non-conformities.

Self-Assessment Questionnaires (SAQs)

If your organisation qualifies for Self-Assessment Questionnaires (SAQs), Locked Stack provides expert guidance through the entire process. We assist with accurate completion and documentation, ensuring all responses are comprehensive and aligned with PCI DSS requirements, thereby simplifying compliance for your business.