Pentests for the checkout, the kiosk,and the loyalty engine.
Checkout races, coupon-stacking logic, and loyalty-points fraud are business-logic flaws scanners cannot reason about. Our pentests stage them end-to-end with reproducible PoCs. Reports accepted by PCI DSS, SOC 2, GDPR, and CCPA auditors.
CREST-conducted · CERT-In empanelled · PCI DSS 4.0 scoped
Retail stack, end to end
Checkout, coupon, loyalty, kiosk, mobile, customer API. One engagement, one Org-wide proof.
Working proof-of-exploit
Captured webhook replays, cart-state traces, IDOR transcripts, kiosk supervisor escape video. Not a scan score.
Re-test included
Every finding re-tested after your team ships the fix. Written closure per path.
Retail security past the PCI checkbox.
PCI ASV scans run quarterly. Your checkout, coupon engine, and loyalty wallet ship weekly. Three ways we close the gap.
BugDazz Autonomous
Continuous coverage on Stripe and Adyen checkout APIs, coupon engines, and loyalty endpoints. Catches business-logic drift between PCI DSS 4.0 ASV scans.
Red team engagement
Multi-week emulation against POS terminals, in-store kiosks, OMS fulfillment, and loyalty wallet APIs. Tests whether your SOC detects the chain, not just the entry.
AI and LLM pentest
Tests shopping assistants and pricing copilots for prompt injection, coupon stacking, dynamic-pricing manipulation, and customer-PII exfil under CCPA and CPRA.
Trusted by security teams across Fintech, SaaS & Education, Enterprise & Telecom, Security & Critical Infrastructure
Scope
Eight retail attack surfaces. Not just the storefront.
Retail breaches walk out of the things scanners cannot see: a coupon stack, a race between two checkout tabs, a loyalty redemption replayed after the points were burned. We test the chain that turns one logic flaw into walked-out money or merchandise.
Checkout and payment integration
Race conditions, Adyen / Stripe / Razorpay webhook tampering, BIN-range abuse, 3DS bypass, refund-after-shipping replay.
Coupon, promo, and pricing engine
Coupon stacking, price-tier downgrade, GWP redemption replay, region-locked promo escape, cart-zeroing chain.
Loyalty and rewards
Points double-credit, tier-cliff exploitation, referral fraud, redemption-window race, account merge takeover.
Inventory and order
Order tampering, oversold-item exploitation, returns-fraud chain, refund manipulation, partial-ship abuse.
PCI DSS scope and tokenization
PAN exposure paths, tokenization-vault bypass, scope-segmentation drift, BIN-range abuse, CDE network leak.
POS and self-checkout kiosk
Receipt and log tampering, kiosk supervisor-mode escape, weight-check bypass, kiosk-network pivot to back-of-house.
Customer-data API
Order-history IDOR, address-book replay, account-merge takeover, GDPR data-export drift, password-reset relay.
Mobile retail app
Cert-pinning bypass, deep-link account takeover, in-store-mode payload tamper, scanner-API abuse, gift-card brute force.
On record
RETAIL ATTACK SURFACE.
What an attacker chains to walk money or merchandise out of a modern retail stack.
- 01Checkout race to double-charge or oversell
Multi-tab checkout with shared cart state, inventory and payment debit race past stock count, customer pays twice or walks with an oversold SKU.
- 02Coupon stack to cart-zeroing
Stacking SKU coupon, cart coupon, loyalty multiplier, and free-shipping promo past intended floor; order total resolves to zero or negative.
- 03Loyalty replay to free redemption
Redemption call replayed inside the points-balance window; same points burn twice; merchandise ships against credit that was already cleared.
- 04Webhook replay to refund-after-shipping
Payment-gateway webhook replayed with stale signature window; refund posts after the order already shipped from warehouse.
- 05PAN tokenization-vault bypass
Token-detokenize endpoint reachable from a non-CDE service, full PAN exposure outside scope, PCI DSS segmentation collapses.
- 06Kiosk supervisor-mode escape
Self-checkout exits to store-mode admin via debug touch sequence or USB HID payload; price overrides, void receipts, kiosk-network pivot.
- 07Customer-API IDOR to order-history exfil
Order-history endpoint trusts customer ID from header, sequential ID enumeration walks every order, name + address + last-four-PAN exfiltrated.
RETAIL-SPECIFIC CHAIN CLASSES.
RETAIL PENTEST METHODOLOGY.
Eight phases. PCI-scoped, closed-loop.
Threat-modelled to your payment rails, coupon engine, loyalty ledger, and kiosk fleet. Not a template we run against every storefront.
- 01Scope and PCI mapping
- 02Checkout race and logic probe
- 03Coupon and promo engine fuzz
- 04Loyalty and rewards integrity
- 05PCI tokenization and segmentation review
- 06POS and kiosk runtime
- 07Mobile and in-store-mode runtime
- 08Chained finding, regulator-ready report, re-test
Insights
Retail security Resources.
Coupon stacking, loyalty replay, and PCI scope drift, drawn from the retail engagements our reviewers keep walking.
Meet our expert
Meet our expert
John Dill
vCISO at SecureLayer7
10+
Years in offensive security
300+
Engagements led
99.7%
On-time delivery rate
John scopes retail engagements against your PCI DSS boundary, payment-rail provider, coupon engine, and kiosk fleet. He guides the pod from kick-off through final report and re-test.
- Scopes single-brand, multi-banner, and franchise retail engagements against your real PCI scope.
- Owns kick-off, mid-engagement check-ins, and live walkthrough of every chained finding.
- Drives remediation review and re-test until every retail attack path is closed.
Ready to scope a retail pentest? Book 30 minutes with John to walk through your PCI scope, payment rails, loyalty ledger, and kiosk fleet.
Book a 30-min callCommon procurement questions
What retail buyers ask about a pentest.
Six questions retail security and procurement teams send before signing a SOW. Answered against our methodology and your auditor.
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Have a procurement question not listed here?
Sample engagement report
See what arrives in your inbox.
A pre-vetted sample retail report: full kill chain from checkout race through loyalty replay, working PoC traces, IDOR transcripts, PCI scope mapping, and re-test scope. Sent on request after a 5-minute scoping call.