Industries Cybersecurity for E-commerce & Retail
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Cybersecurity Services for E-commerce & Retail

E-commerce and retail organisations face an intense and continuously-evolving threat landscape. Magecart-style card-skimming attacks, credential stuffing against customer accounts, bot-driven inventory abuse, account takeover for loyalty point theft, supply chain compromise via third-party scripts, all combine to make e-commerce one of the most actively-targeted sectors online.

RedSecLabs delivers PCI DSS QSA assessments, web application and API penetration testing, GDPR compliance, and ongoing security advisory for UK and international retailers operating online. We work with everything from challenger DTC brands scaling rapidly through to established omnichannel retailers managing complex legacy estates.

Our approach is grounded in the operational reality of e-commerce: high-frequency releases, third-party script dependencies, peak-event traffic patterns (Black Friday, sale events), and the customer-experience cost of overly-cautious security controls.

CREST Certified Pen Test Provider ISO Certified OSCP Certified Industry Certification
The package
E-commerce & Retail Security Package

8 core services. One engagement. Single team. Evidence reuse across frameworks.

  • Scope & PCI Posture Assessment
  • Web Application Testing
  • API Penetration Testing
  • Third-Party Script Review
  • Mobile App Testing
  • Cloud and Infrastructure Testing
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PCI DSS
QSA in-house
Magecart-aware
Script supply chain
Peak-event
Resilience tested
Web + API
Combined testing

E-commerce security challenges

E-commerce platforms aggregate uniquely valuable attack surfaces: payment card data flow (PCI DSS scope), customer personal data and credentials (GDPR), loyalty programmes with monetisable points balances, and supply chains of third-party scripts (analytics, payment, personalisation) that execute in customers' browsers. Each surface has its own attacker community and characteristic attack patterns.

The retail-specific threat landscape now includes: Magecart-style web skimmers injected via compromised third-party scripts; credential stuffing attacks driven by reused customer passwords; bot-driven inventory abuse around sale events; voucher and loyalty point fraud; account takeover for refund and reward extraction. None of these are addressable by perimeter security alone.

What our e-commerce security delivers:

PCI DSS compliance maintained across release cycles

Web and API testing covering business-logic flaws

GDPR compliance including customer data subject rights

Third-party script supply chain risk reduction

Bot and abuse-mitigation effectiveness validation

Peak-event security resilience testing

E-commerce security must work at e-commerce speed, release cycles measured in days, not months. Our engagement model is built for this cadence.

Why e-commerce security matters

E-commerce security incidents have measurable revenue impact: Magecart-style skimmers run undetected for months on average, harvesting card data at scale; credential stuffing drives chargebacks and customer trust damage; sale-event downtime translates directly to revenue loss. Several major UK retailers have publicly disclosed multi-million-pound impacts from web skimming alone.

Regulatory pressure is also accelerating. PCI DSS v4.0 introduced more demanding requirements particularly around web application security and third-party scripts; GDPR enforcement against retailers has produced some of the largest UK fines on record; consumer protection law increasingly intersects with security in cases of credential abuse.

Common pressures on e-commerce security teams:

Magecart-style skimmers via compromised third-party scripts

Credential stuffing driving chargebacks and trust loss

PCI DSS v4.0 requirements on web application security

Sale-event downtime translating to direct revenue impact

Bot-driven inventory abuse and voucher fraud

Account takeover for loyalty point extraction

E-commerce security pays for itself in fraud avoidance and customer retention, but only if it is run with retail-context awareness.

Who we serve in retail

Our e-commerce and retail client base covers the spectrum of UK and international retail operations:

Online-only DTC brands

Omnichannel retailers (online + store)

Marketplaces and platform retailers

Luxury and premium retail

Quick-commerce and last-mile delivery

Cross-border international retailers

Fashion and lifestyle brands

Retail technology and PSP vendors

Whether you sell through Magento, Shopify, BigCommerce, Salesforce Commerce Cloud, or bespoke platforms, our methodology adapts to your stack. Our PCI DSS QSA team is specifically experienced in modern e-commerce architectures.

Package includes

What's in your E-commerce & Retail package

Eight services bundled for UK e-commerce and retail. PCI DSS, pentesting, Magecart defence, GDPR, all delivered around your trading calendar so peak windows are protected.

01

Scope & PCI Posture Assessment

We map your card-handling data flow, current PCI DSS merchant level, scope reduction strategy (tokenisation, hosted payment pages), and overall posture against PCI DSS v4.0 requirements.

02

Web Application Testing

Annual or per-release CREST-certified web application testing covering OWASP Top 10, business logic, and the retail-specific patterns (price tampering, voucher abuse, account takeover).

03

API Penetration Testing

API testing focused on the patterns retail APIs exhibit, broken object-level authorisation against order/customer endpoints, mass assignment in admin APIs, rate limiting and abuse vectors.

04

Third-Party Script Review

Magecart-aware assessment of third-party JavaScript dependencies, analytics, personalisation, A/B testing, payment widgets, and the Content Security Policy framework around them.

05

Mobile App Testing

Where in scope, iOS and Android app testing covering local storage, certificate pinning, and the backend API the app calls.

06

Cloud and Infrastructure Testing

AWS, Azure, or GCP testing for cloud-hosted commerce environments. IAM, configuration review, segmentation between PCI and non-PCI environments.

07

PCI DSS QSA Engagement

Where required, full PCI DSS QSA assessment ending in a signed Report on Compliance or Self-Assessment Questionnaire validation, plus remediation support before the next assessment cycle.

08

Peak-Event Resilience Review

Pre-Black Friday or peak-event security and resilience testing, load-test-correlated security review of the systems that will face peak load during sale events.

Most retail clients run six to eight of these annually. Fixed-fee package, scheduled around your trading calendar, with peak windows protected.

Services we deliver for e-commerce & retail

Our retail clients typically use some combination of:

  • PCI DSS QSA assessment and Report on Compliance
  • Web application penetration testing focused on retail logic
  • API penetration testing for e-commerce backends
  • Mobile app testing for retail iOS and Android apps
  • GDPR compliance for customer data processing
  • Cloud security assessment (AWS, Azure, GCP)
  • Vulnerability assessment programme
  • Secure code review for in-house commerce platforms

Industries We Serve

We deliver this service across these industries:

Financial Services
Healthcare
E-commerce & Retail
SaaS & Technology
Hospitality
Manufacturing & Industrial

Why RedSecLabs for e-commerce

E-commerce security demands testers who understand the operational reality of retail, release cadences, peak events, third-party script dependencies, fraud-versus-friction trade-offs. Our retail practice combines PCI DSS QSA depth with CREST-certified testers who have spent careers in commerce-platform testing. Reports are written for retail audiences, concrete findings, retail-realistic remediation guidance, no security-theatre recommendations.

PCI DSS QSA in-house qualified
CREST-certified retail-context testers
E-commerce and retail specialism
Magecart and supply chain aware
Per-release testing cadence supported
Peak-event resilience review

Book a package scoping call

30 minutes. We'll map the package to your industry context and quote a fixed annual fee within 48 hours.

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Where to next

Related services and industry packages worth exploring.

PCI DSS Compliance

Amazon SP-API Audit

Web App Pentesting

GDPR & Data Protection

Frequently Asked Questions

Yes, our QSA team is fully qualified under PCI DSS v4.0 and we have delivered v4.0 assessments since the initial transition window opened. We support both Reports on Compliance for Level 1 merchants and service providers, and SAQ validation across the lower merchant levels.

It affects scope but not whether testing is needed. SaaS commerce platforms shift some controls to the platform provider but leave significant customisation, third-party script, and API attack surface in your control. We test what you can control on each platform, calibrated to the shared responsibility split.

Using a hosted payment provider (Stripe Checkout, Adyen-hosted, etc.) reduces your PCI scope substantially, but does not eliminate it. The pages that redirect to or iframe the payment page remain in scope, your overall environment requires general controls, and SAQ A or SAQ A-EP validation is typically still required. We help structure scope reduction effectively.

Yes, we strongly prefer pre-production testing of payment flows. Where production testing of specific scenarios is unavoidable, we use test card data, sandbox modes, and tight scope controls to prevent any impact to real customer transactions or settlements.

Magecart-aware assessment is a standard part of our e-commerce engagements, review of third-party scripts loaded on payment pages, Subresource Integrity (SRI) usage, Content Security Policy (CSP) framework, and the change-detection controls around in-scope JavaScript. PCI DSS v4.0 explicitly increased focus on this area.

Yes, many retail clients schedule security and resilience testing 4-6 weeks before peak events. The testing combines targeted security review of payment and customer account flows with correlation to load-test outputs, looking for controls that degrade under peak load (rate limiting, abuse mitigation, fraud scoring).
Sector-specific risks

The threats E-commerce & Retail firms actually face

⚠

Card skimming & Magecart

Third-party scripts on checkout pages are persistent infection vectors. Detection often happens months after exfiltration begins.

⚠

Account takeover at scale

Loyalty programmes, stored payment methods, and saved addresses make consumer accounts valuable targets for ATO and credential stuffing.

⚠

Mobile app and PWA gaps

Mobile apps often handle payment data with weaker controls than the main web platform. Apple Pay / Google Pay integrations expose new attack surface.

Common buying triggers

When firms in your sector engage us

  • › PCI DSS SAQ-A-EP or D requirement from acquirer
  • › Annual penetration test required by card brand or payment processor
  • › Post-incident assurance after card-data exposure
  • › Mobile app launch or major checkout redesign
Compliance drivers

Frameworks that apply

PCI DSS v4.0GDPRConsumer protection regulationsCard brand requirements
Services for this sector

What we typically deliver

› PCI DSS Compliance › PCI DSS QSA (UK) › Web App Pentesting › Mobile App Pentesting › Amazon SP-API Audit › Incident Response
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