> series: sector_under_the_microscope —— part: 07/10 —— sector: retail —— target: payment_data<span class="cursor-blink">_</span>_
Retail sits at the intersection of high transaction volumes, large customer databases, payment card processing, and intense seasonal pressure — creating a threat landscape that is both financially motivated and operationally punishing. Whether you operate an e-commerce platform, a chain of physical stores, or both, the threat actors targeting retail are after the same thing: payment card data, customer PII, and access to financial systems.
We'll scope your test for free and tell you exactly what you need. No obligation, no hard sell.
Free Scoping CallAny retailer that processes, stores, or transmits cardholder data is subject to PCI DSS — the Payment Card Industry Data Security Standard. PCI DSS mandates annual penetration testing (Requirement 11.4), regular vulnerability scanning, and a comprehensive set of security controls across twelve requirement categories. Our PCI DSS penetration testing service is designed specifically for retailers navigating this compliance requirement.
For smaller retailers, reducing PCI scope through tokenisation and hosted payment pages is the most effective strategy — it shifts the card data handling to a PCI-compliant payment service provider and dramatically reduces the retailer's compliance burden. However, even with reduced scope, the retailer's website and network infrastructure must still meet PCI requirements for the services that remain in scope.
| Finding | Retail Context |
|---|---|
| Outdated e-commerce platforms | Magento, WooCommerce, Shopify customisations, and bespoke platforms running outdated versions with known vulnerabilities. E-commerce platforms are particularly high-risk because they handle payment flows and customer data directly. |
| Third-party JavaScript on checkout pages | Analytics scripts, chat widgets, marketing pixels, and A/B testing tools loaded on checkout pages — any of which could be compromised to inject skimming code. Supply chain attacks through third-party JavaScript are the modern Magecart methodology. |
| Weak API security | E-commerce APIs that expose more data than intended, lack proper authentication, or allow manipulation of prices, quantities, or discount codes. Our API penetration testing frequently reveals business logic flaws that enable financial manipulation. |
| POS system vulnerabilities | Point-of-sale systems in physical stores running outdated software, connected to the corporate network without segmentation, and managed with shared credentials across multiple locations. |
| No separation between e-commerce and back-office | The web server hosting the e-commerce platform shares a network, database server, or even physical host with back-office systems — inventory, CRM, financial systems. A compromise of the web application provides a direct path to business-critical data. |
For retailers, the testing priorities are driven by two factors: payment card security (PCI DSS) and customer data protection (GDPR). Start with the e-commerce platform — web application testing and API testing — then extend to infrastructure, network segmentation, and POS security.
For ongoing protection, SOC in a Box for Retail monitors your e-commerce infrastructure, detects skimming attempts, alerts on credential stuffing attacks against customer accounts, and provides the continuous security visibility that PCI DSS expects. Combined with Cyber Essentials certification, this provides a comprehensive security posture for retailers of all sizes.
Next week, we examine professional services — consultancies, agencies, and service firms that hold client data across multiple engagements and face threats that target the trusted adviser relationship.
We deliver <a href="/penetration-testing/pci-dss">PCI DSS penetration testing</a>, <a href="/penetration-testing/web-application">web application testing</a> for e-commerce platforms, and <a href="/cyber-essentials">Cyber Essentials certification</a> for retailers across the UK. Our testing targets the specific threats your sector faces — from checkout skimming to customer account takeover.
We'll scope your test for free and tell you exactly what you need. No obligation, no hard sell.
Free Scoping Call