E-Commerce Penetration Testing
Online stores get attacked for money. We go after the checkout and payment logic — price tampering, coupon abuse, order manipulation — plus the account takeover paths that feed fraud.
What is E-Commerce Penetration Testing?
Online stores are attacked for direct financial gain. We focus where the money moves — the cart, checkout and payment flow — testing whether prices, discounts and orders can be manipulated, and whether accounts can be taken over to commit fraud.
An e-commerce site is a machine for moving money, and attackers target the seams where value changes hands. The bugs that matter aren't only classic web flaws — they're logic errors in pricing, discounts, refunds and order state that let someone pay less, pay nothing, or turn store credit into cash. We test the full purchase journey the way a fraudster would, then the account and data paths that feed larger fraud.
E-commerce also carries compliance weight: handling cards pulls you into PCI DSS, and a breach means fines, brand damage and lost trust on top of direct fraud. Testing the store therefore protects both the money moving through it today and the regulatory standing that keeps you able to take payments at all.
E-Commerce Penetration Testing is a manual, exploit-driven assessment: real people attacking your target the way an adversary would, then proving each finding with a working proof of concept. It is not an automated scan with a logo on it — the point is to find and demonstrate the issues that actually put you at risk, and hand your team a clear plan to fix them.
Why it matters
Applications are the most-attacked surface on the internet, and a single exploitable flaw can expose your entire customer base. Scanners catch the obvious; the damaging bugs live in logic and authorization, where only manual testing reaches them.
A e-commerce penetration testing engagement replaces guesswork with evidence. Instead of hoping your controls hold, you get a ranked, reproducible picture of where they don’t — before someone hostile finds the same gaps.
Industries & use cases
E-commerce testing matters for online retail, marketplaces, subscription commerce and any platform processing payments — where PCI DSS obligations and direct financial fraud both apply.
What we test
Manual, exploit-driven coverage focused on real impact — not scanner noise.
- Price and cart manipulation
- Coupon, voucher and discount abuse
- Payment and checkout workflow flaws
- Account takeover and credential attacks
- IDOR on orders and customer data
- PCI-relevant configuration issues
Signs you should run a e-commerce penetration testing
If any of these apply, testing is overdue.
- You process card payments or handle PCI scope
- You run promotions, coupons, loyalty or store credit
- You've customised checkout or use a headless setup
- You've had fraud or chargeback issues
- You handle significant volumes of customer PII
Common vulnerabilities we find
The issues that show up again and again in e-commerce penetration testing — and the ones that actually get exploited.
Price & cart manipulation
Tampering with quantities, prices or currency values yields goods below cost.
Coupon & discount abuse
Stacking, reusing or forging vouchers beyond intended limits.
Order workflow bypass
Skipping payment or approval steps to complete an order without paying.
Refund and store-credit abuse
Flaws in refund, cancellation or loyalty logic that generate value out of nothing.
Account takeover
Weak password reset, credential stuffing or session flaws leading to takeover and stored-card abuse.
Payment tampering via client trust
Server accepting client-supplied prices, totals or currency.
Inventory and race conditions
Concurrent requests over-redeeming stock, coupons or limited offers.
PII exposure on orders
IDOR or misconfiguration leaking customer names, addresses and order history.
Example attack chain
Real impact rarely comes from one bug — it comes from chaining several. A representative example:
Why choose webhook.press
Attacker mindset
We’re offensive security people who also build the free tools bug-bounty hunters use daily. We test the way real adversaries do — and prove it.
No scanner theatre
You get findings a human exploited and verified, ranked by real business risk — not an unfiltered tool dump padded to look thorough.
Fixed price, free retest
A clear quote after scoping, a report your team and auditors can use, and a free retest to confirm the fixes hold.
Our methodology
A structured, transparent process aligned to OWASP and PTES — with a named point of contact throughout.
Scoping & rules of engagement
We agree the exact targets, depth, timing and constraints for your e-commerce penetration testing, and set clear rules of engagement so testing is safe and predictable.
Reconnaissance & mapping
We enumerate the full attack surface — endpoints, roles, technologies and trust boundaries — and threat-model where an attacker would focus.
Manual testing & exploitation
We attack by hand, verifying and chaining weaknesses into real impact. Automated tooling supports coverage; humans find the logic and authorization bugs it can’t.
Analysis & risk rating
Each finding is validated, rated by real business risk rather than raw scanner severity, and de-duplicated so you get signal, not noise.
Reporting
You receive an executive summary for leadership and a technical section with reproducible PoCs, evidence and concrete, stack-specific remediation.
Free retest
After you remediate, we re-test the closed findings to confirm they are actually fixed — at no extra cost.
What you get
Reproducible PoCs
Every finding ships with a working proof and step-by-step reproduction your engineers can replay and verify.
Risk-ranked findings
Prioritised by real business impact, so you fix what matters first instead of drowning in low-severity noise.
Actionable remediation
Concrete, stack-specific fixes and guidance — not generic “apply best practice” filler.
Free retest
We re-check the closed findings after remediation and confirm they’re resolved.
The report is written for two audiences at once: an executive summary that a non-technical stakeholder can act on, and a detailed technical section — findings, evidence, CVSS and reproduction — that your developers and auditors can use directly.
Manual testing, not just a scan
Automated scanners are fast and useful for coverage, but they only find patterns they already know, and they flood you with false positives. They cannot understand your business logic, chain several small issues into a breach, or tell you which alert actually matters. Our e-commerce penetration testing is led by experienced testers who exploit findings by hand and rank them by the damage they’d really do — the difference between a 300-page tool dump and a short list of things worth fixing.
Standards & compliance
Our e-commerce penetration testing reports are written to support the frameworks your auditors and customers care about — including SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, and the EU’s NIS2 and DORA. Each engagement produces clear, independent evidence of testing with scope, methodology and findings documented the way assessors expect, so the same test both hardens your systems and helps satisfy your obligations.
Frameworks we follow
Recognised methodologies, adapted to your target — never a rigid checklist.
- OWASP — Web Security Testing Guide, ASVS and the API Security Top 10
- PTES — the Penetration Testing Execution Standard
- NIST SP 800-115 — technical guide to security testing
- OSSTMM — Open Source Security Testing Methodology Manual
- MITRE ATT&CK — to frame real-world adversary techniques
FAQ
Do you test the payment provider?
We test your integration and logic, not the provider's systems — that's where the exploitable bugs usually are.
Which platforms?
Custom stores, Magento, Shopify apps, WooCommerce and headless commerce.
Do you test the payment logic without touching real payments?
Yes — we test your integration and order logic in a controlled way, using test modes and agreed rules of engagement.
Which platforms do you cover?
Custom builds, Magento, WooCommerce, Shopify apps and headless commerce.
Does this help with PCI DSS?
Yes — it aligns with the penetration-testing requirement and hardens the payment flow auditors scrutinise.
Do you test promotions and loyalty logic?
Yes — discount stacking and store-credit abuse are among the most common e-commerce money bugs.
How long does a e-commerce penetration testing take?
Most focused engagements run one to two weeks depending on scope; we agree the exact timeline during scoping.
Is a retest included?
Yes — after you remediate, we re-check the closed findings to confirm they’re fixed, at no extra cost.
How do you price it?
Per engagement, based on scope and depth — you get a fixed quote after a short scoping call. No cookie-cutter packages.
Why teams trust our e-commerce penetration testing
Aligned to recognised standards
Testing follows OWASP, PTES, NIST SP 800-115 and MITRE ATT&CK, and reports support SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, NIS2 and DORA.
Every engagement includes
Reproducible PoCs, risk-ranked findings, concrete remediation, a named point of contact, a free retest, and a summary letter of attestation.
Confidential by default
Work is covered by an NDA, scoped with clear rules of engagement, and data is handled with care throughout — including residency requirements.
Sample report available on request — see our reporting format and depth before you commit. Ask for a sample →
Get a quote for E-Commerce Penetration Testing
Tell us about the target — we’ll come back with scope and a fixed price. Manual, exploit-driven testing with reproducible proof and a free retest.