We are not a QSA. We perform PCI-aligned testing per Requirement 11.3, complementary to QSA-led ROC engagements.

Do you test Magecart-class attacks?

Yes, on every e-commerce engagement. Third-party script integrity, SRI verification, CSP review, loaded-script behavior analysis.

Can pentest evidence support our PCI ROC?

Yes. Our reports are pre-mapped to PCI DSS requirements and accepted by all major QSA firms.

E-commerce & Retail

PCI DSS & E-commerce Penetration Testing

Pentest evidence for card data and revenue flows.

CredShields delivers PCI DSS-aligned penetration testing for e-commerce platforms, marketplaces, omnichannel retail, and direct-to-consumer brands. Magecart-class supply chain attacks, coupon stacking and revenue exploitation, ATO via account-recovery flaws, fraud system bypass. PCI 11.3 evidence on every engagement.

What We Test Often

Magecart-class third-party script attacks

Checkout flow integrity and race conditions

Account takeover via account recovery flaws

Coupon, promo, and pricing logic manipulation

Loyalty / gift card / wallet abuse

Marketplace seller-buyer trust boundaries

01 // E-COMMERCE HAS REAL ATTACKERS

Card-data attackers don't wait for your annual pentest.

E-commerce is one of the most actively-targeted industries on the public internet. Magecart-class card skimmer attacks, fake-checkout phishing, account takeover for loyalty point theft, and coupon stacking exploits run continuously against any commerce site with meaningful traffic. The defenders' problem is not finding sophisticated zero-days. It's keeping pace with the steady stream of exploitable issues that ship into production every release. Pentest plus continuous coverage matters more here than in most industries because the attacker side is more relentless.

Third-party script integrity and supply chain (Magecart vector)
Checkout flow logic: race conditions, coupon stacking, price manipulation
Account takeover paths: password reset, email change, MFA bypass
Loyalty program and stored value manipulation (gift cards, points, wallets)
Inventory and pricing system abuse via cart manipulation
Marketplace boundary: buyer-seller-platform trust model

Common e-commerce findings

CRITICAL  Magecart-class checkout JS injection
  Compromised third-party script on checkout
  → card data exfiltration to attacker
  // PCI 6.4.3, 11.6.1

CRITICAL  Coupon stacking via race condition
  POST /cart/apply-coupon (concurrent)
  → 12 coupon applications accepted
  // Direct revenue impact

HIGH      Account takeover on /account/email-update
  No re-auth required for email change
  → ATO via password reset to new email
  // PCI 8.3, FTC Safeguards

HIGH      Inventory manipulation via cart hold
  Add-to-cart without TTL on holds
  → competitor DoS, scalping abuse
  // Fraud / abuse vector

02 // PCI EVIDENCE WITHOUT THE ANNUAL FIRE DRILL

If your QSA scopes change every year, your pentest evidence shouldn't have to start from zero.

PCI DSS Level 1 service providers, large merchants, and growing direct-to-consumer brands all face the annual ROC. The traditional pattern: a sprint right before audit, an annual pentest engagement scoped to fit the audit window, scrambling for evidence. Continuous AppSec changes the cadence. Evidence is always current. PCI 11.3 testing happens continuously. The annual ROC becomes a confirmation, not a fire drill. Most of our retail and e-commerce clients move to this model after their second annual cycle.

Continuous PCI 11.3 evidence with always-current testing log
CDE / non-CDE scoping verification per engagement
Tokenization and segmentation testing as standard scope
Annual ROC support with QSA liaison time included

PCI evidence flow

CONTINUOUS APPSEC SUBSCRIBER

  Q1 → Quarterly senior-engineer review
       Findings logged in real-time
       Retests verified within hours

  Q2 → Cardholder data flow trace
       CDE / non-CDE re-scoping
       Tokenization vault testing

  Q3 → Pre-ROC alignment session
       QSA liaison kickoff
       Outstanding findings remediated

  Q4 → ROC fieldwork support
       QSA questions answered same-day
       Evidence handed off complete

RESULT: ROC fieldwork compresses from
        4 weeks to 2 weeks. Audit fees
        often drop accordingly.

Operational Reality

Card-data exposure is a customer-trust event, not just a regulator event.

PCI fines and assessment are real, but the larger cost of an e-commerce breach is the brand and customer-trust damage. Magecart-class attacks have cost public retailers tens of millions in remediation and customer compensation, plus board-level governance reviews. For DTC brands, a breach can wipe out three quarters of customer-acquisition spend in a single news cycle. Pentest evidence is the cheapest line item in your trust-and-safety budget.

Coverage by E-commerce Sub-Vertical

Specialized testing for retail surfaces.

D2C Brands & Shopify-Adjacent

Storefront security on Shopify Plus, BigCommerce, custom Next.js. Third-party script audit, checkout integrity, customer account flows.

Marketplaces & Multi-Vendor

Buyer-seller-platform trust boundaries, dispute flow integrity, payout flow security, listing and review manipulation.

Enterprise Retail Platforms

Magento, Salesforce Commerce Cloud, SAP Hybris, Shopify Plus. CDE scoping verification, tokenization vault security, omnichannel integration.

Loyalty & Stored Value

Gift card systems, loyalty point ledgers, wallet products, BNPL integrations. Often where the most exploitable revenue logic lives.

Subscription Commerce

Recurring billing flow integrity, subscription manipulation, dunning logic abuse, customer cancellation flows.

Mobile Commerce

Native iOS / Android shopping apps, mobile-specific attacks (deep link abuse, in-app purchase manipulation, app store privacy compliance).

Frequently Asked

Common questions, answered.

Are you a PCI Qualified Security Assessor (QSA)?

We are not a QSA. We perform PCI-aligned testing per Requirement 11.3. The standard pattern is: you engage a QSA firm for the annual ROC and us for the technical testing. The two roles are explicitly complementary in PCI DSS guidance. We work directly with most major QSAs and have a smooth handoff with their assessment teams.

How do you handle CDE scoping verification?

Cardholder data environment scoping is part of every PCI-relevant engagement. We trace cardholder data flows end-to-end, identify systems that should be in CDE scope based on actual data handling, and flag scope inconsistencies in the report. This is one of the most common findings on first-engagement clients: CDE scope is broader than the documented scope by 20-40%.

Do you test for Magecart-class supply chain attacks specifically?

Yes, on every e-commerce engagement. Third-party script inventory, integrity verification (SRI), Subresource Integrity policy review, content security policy adequacy, behavior analysis of loaded scripts. PCI DSS 6.4.3 and 11.6.1 (added in v4.0) make this explicit; our methodology has covered it since before the requirement was formalized.

Can your pentest evidence support our annual PCI ROC?

Yes. Our reports are pre-mapped to PCI DSS requirements, accepted by all major QSA firms, and structured to drop into the assessment workpapers. We can speak directly to your QSA when needed. Continuous AppSec subscribers benefit most: evidence is always current, ROC fieldwork compresses, and the annual fire drill goes away.

How do you avoid disrupting our checkout flow during testing?

Staging environments by default, with realistic test data shapes. Production testing requires explicit scope, isolated test transactions, and direct contact with your fraud and ops teams during the engagement. We have tested live checkout flows at scale without operational disruption, but the staging-first model is preferred and almost always sufficient.

Do you test our fraud prevention systems and how they integrate with payment processors?

Yes, with caveats. Adversarial testing of fraud detection rules can pollute the rules' training data and cause false-positive cascades. We coordinate with your fraud team to scope what is tested, when, and how findings are isolated from operational fraud feeds. For payment processor integrations (Stripe, Braintree, Adyen, etc.), we test the integration boundary on your side.

What about our mobile commerce app? Same engagement?

Usually a co-scoped companion engagement. Mobile commerce has its own attack surface (in-app purchase manipulation, deep link abuse, app-specific session handling, app store privacy compliance). We discount combined web + mobile engagements and run them in parallel for faster delivery.

How does loyalty and gift card abuse testing work?

Loyalty and stored-value systems are some of the most exploitable revenue logic in e-commerce. We test for: balance manipulation, double-spend via race conditions, cross-account transfer flaws, bulk-issuance abuse, fraud detection bypass, and accounting reconciliation manipulation. Findings here often have direct quantifiable revenue impact, which makes them easy to prioritize internally.

Do you support omnichannel retailers with in-store + online integration?

Yes. Omnichannel testing covers the boundary between online and in-store systems: customer recognition flows, returns reconciliation, gift card issuance crossing channels, loyalty point posting from POS, BOPIS / curbside pickup flows. The integration boundary is where most omnichannel-specific findings live.

Ready to ship secure?

Talk to a senior engineer who has worked with companies in your industry. No SDR script, no slide deck. Just a working session about your stack and your compliance posture.

PCI DSS & E-commerce Penetration Testing

Pentest evidence for card data and revenue flows.

Card-data attackers don't wait for your annual pentest.

If your QSA scopes change every year, your pentest evidence shouldn't have to start from zero.

Card-data exposure is a customer-trust event, not just a regulator event.

Specialized testing for retail surfaces.

Common questions, answered.

Continue exploring

The pentest your auditor will accept.The findings your engineers will fix.

The pentest your auditor will accept.
The findings your engineers will fix.