Retailers have transformed how they accept payments to meet rising customer expectations. From omnichannel shopping and mobile point-of-sale systems to complex e-commerce ecosystems, payment data now moves across more channels, systems, and third parties than ever before. While that convenience can accelerate growth, it also expands the attack surface for cybercriminals targeting cardholder data.
Payment Card Industry Data Security Standard (PCI DSS) version 4.0.1 remains the current credit card standard and clarifies how organizations should apply existing requirements in today’s payment ecosystem, including stronger expectations around access control, e-commerce security, and third-party oversight. The PCI Security Standards Council (SSC) describes version 4.0.1 as a limited revision with no new or removed core requirements, but with clarifications that matter operationally.
For retailers, PCI compliance is especially critical because they are where payment risk becomes operational reality. Every checkout lane, e-commerce cart, mobile app, kiosk, and call-center order flow is a point where cardholder data can be exposed if controls are weak or inconsistently applied. Add in distribution locations, multiple vendors, seasonal staff, and frequent system changes, and even small control gaps can quickly turn into larger compliance and security issues.
In PCI terms, a retailer is generally any merchant that accepts payment cards for goods or services. That includes traditional stores such as grocery, department, convenience, pharmacy, fuel, and specialty retailers, as well as e-commerce businesses, direct-to-consumer brands, restaurant chains, and other merchants that accept card payments through point-of-sale systems, online checkout pages, or mobile applications.
An important takeaway for retailers is that if your business accepts card payments through any of these channels, then PCI obligations likely apply and should be built into day-to-day operations (rather than treated as a once-a-year compliance exercise).
With this context in mind, here are five priorities retailers should understand as they strengthen their PCI compliance strategy.
1 Reduce Scope Wherever Possible.
For most retailers, the quickest way to make PCI more manageable is to reduce scope early. Start by identifying exactly where cardholder data enters, moves, and exits the business, then separate those payment systems from the rest of the organization’s systems that do not process, transmit or store cardholder data. The fewer systems, users, and vendors that can touch or affect the cardholder data environment (CDE), the lower the compliance burden and the easier it is to maintain controls over time.
Retailers often make the mistake of leaving their broader corporate network and systems in scope for an assessment. A better approach is simple: if a system does not store, process, transmit, or directly impact cardholder data security, it should be isolated from the CDE.
Firewalls, Virtual Local Area Networks (VLANs), and logical separation between payment systems, employee Wi-Fi, inventory platforms, and back-office networks can significantly reduce assessment effort.
- What this looks like in practice: Network segmentation that isolates the CDE from less sensitive business systems, supported by clearly documented data flows and access boundaries.
- How retailers can go further: Technologies such as point-to-point encryption and tokenization can reduce exposure by ensuring payment data is protected as early as possible in the transaction flow, which may lower the compliance burden for systems that never handle raw account data.
2 Use Third Parties Strategically.
Many retailers can simplify PCI by deliberately shifting payment handling to qualified third parties, but the structure of that arrangement matters. Hosted payment pages, tokenization services, and validated providers can reduce the number of internal systems that handle raw card data, but only if the payment flow is designed correctly and responsibilities are clearly defined. Retailers should treat third-party payment architecture as a scoping decision, not just a procurement decision.
Outsourcing payment processing, however, does not eliminate retailer responsibility. The SSC notes that merchants still need to confirm eligibility for the appropriate self-assessment path and understand the responsibilities that remain with them, including oversight of third parties and e-commerce security.
Depending on the payment model, some retailers may qualify for reduced validation paths such as Self-Assessment Questionnaires (SAQ), rather than more rigorous assessments that require third-party validation such as a Report on Compliance (ROC). The key is to maintain a clear responsibility matrix, review provider attestations of compliance annually, and confirm that third-party arrangements truly reduce scope rather than simply shift risk.
3 Treat Multifactor Authentication (MFA) as Mandatory.
Retailers should approach MFA as a day-to-day access control issue, not just a technical requirement for administrators. Any user, vendor, or support resource with access into the cardholder data environment can create unnecessary risk if authentication is weak or inconsistent. In practice, retailers should confirm where access exists today, which accounts are shared or inactive, and whether MFA is enforced consistently across store, corporate, remote, and third-party access paths.
- Why this matters operationally: MFA is no longer limited to a small set of privileged users. Retailers need to evaluate how employees, contractors, administrators, and support personnel access systems in or connected to the CDE.
- Why it is especially important for retail: High employee turnover, distribution locations, and seasonal staffing can make access management difficult. Strong identity lifecycle processes, prompt deprovisioning, and consistent MFA enforcement help reduce the risk of compromised or lingering credentials becoming a breach path.
4 Build for Continuous Compliance.
The retailers that struggle most with PCI compliance are usually the ones treating it as a once-a-year project. A more practical approach is to build PCI activities into normal operating rhythms such as patching, access reviews, change management, log review, vendor oversight, and evidence collection.
For retailers, the goal should be a compliance process that can keep up with store changes, e-commerce updates, staffing turnover, and new technologies without creating a scramble before assessment time.
5 Understand the Business Impact of Noncompliance.
Retailers should understand that PCI noncompliance is not just an audit problem; it can quickly become a business problem. If payment controls fail, the impact can include fines, forensic costs, higher processing scrutiny, remediation expense, and in some cases pressure from acquiring parties that affects the ability to accept cards.
For retailers operating on thin margins and high transaction volume, even a limited payment security incident can create outsized operational and reputational disruption.
Final Thoughts
PCI compliance should not be viewed as a standalone regulatory exercise. For retailers, it is part of protecting revenue, preserving customer confidence, and strengthening operational resilience in an increasingly complex payment environment.
Organizations that focus on scope reduction, third-party governance, access control, and continuous compliance may be better positioned to meet PCI DSS expectations while supporting growth.
Additional PCI SSC Resources
Retailers looking to explore these topics in more detail may wish to consult resources published by the PCI Security Standards Council, including materials on PCI DSS version 4.0.1, scoping and segmentation, self-assessment eligibility, MFA, and targeted risk analysis.
How Forvis Mazars Can Help
Professionals at Forvis Mazars can assist with PCI compliance programs and other IT Risk & Compliance concerns. If you have any questions or need assistance with configuration standards, please contact us.