E-commerce platforms are among the most attractive targets for cybercriminals. They combine everything attackers are looking for: credit card data, customer personal data, opportunities for financial fraud, and often weak security resulting from time-to-market pressure.
This article describes the specifics of penetration testing for electronic commerce platforms.
Why E-commerce is a Special Target
Valuable Data
Payment data:
- Credit card numbers
- CVV/CVC
- Payment data for various providers
- Payment tokens
Personal data:
- Names, addresses
- Phone numbers, emails
- Purchase history
- Shopping preferences
Business data:
- Prices and margins
- Supplier data
- Pricing strategies
- Sales data
Fraud Opportunities
- Fraud using stolen cards
- Price manipulation
- Return fraud
- Loyalty program theft
- Gift card fraud
Typical Weaknesses
- Pressure for quick deployments (time-to-market)
- Many integrations with external systems
- Seasonal load peaks
- Frequent code changes (promotions, sales)
📚 Read the complete guide: OT/ICS Security: Bezpieczeństwo systemów OT/ICS - różnice z IT, zagrożenia, praktyki
Key Testing Areas
1. Payment Process
What to test:
a) Price manipulation
- Can price be modified in request?
- Is price validation server-side?
- Is price verified before payment finalization?
b) Quantity manipulation
- Negative product quantities
- Fractional quantities
- Exceeding inventory levels
c) Promotional codes
- Multiple use of one-time codes
- Discount stacking
- Discount value manipulation
- Race conditions when using codes
d) Payments
- Can payment step be skipped?
- Is callback from gateway validated?
- Are payment tokens secure?
2. User Account Management
a) Registration
- Email validation (can you register on others’ addresses?)
- Password policy
- Protection against mass registration
- Account enumeration
b) Login
- Brute force protection
- Credential stuffing resistance
- MFA bypass
- Session management
c) Password recovery
- Token security (is link one-time, does it expire?)
- Information disclosure (does system confirm account existence?)
- Account takeover via reset
d) User profile
- IDOR (access to others’ data)
- Email change without verification
- Delivery address editing
3. Cart and Checkout
a) Race conditions
- Multiple placement of same order
- Using promotion more than once
- Inventory state change between steps
b) Business logic
- Skipping checkout steps
- Changing delivery method after price calculation
- Adding products after discount applied
c) Gift cards and vouchers
- Number predictability
- Number brute force
- Double spending
4. Admin Panel
a) Access
- Panel exposure (is it publicly accessible?)
- Weak credentials
- Missing MFA
b) Permissions
- Privilege escalation
- Access to functions outside role
- Customer data export
c) Critical functions
- Price changes
- Creating discount codes
- Access to payment data
- Order modification
5. External Integrations
a) Payment gateways
- Callback/webhook security
- Signature validation
- Replay attack resistance
b) ERP/CRM systems
- API security
- Data synchronization
- Credential management
c) Logistics providers
- API for labels and tracking
- Access to address data
d) Marketing and analytics
- Pixel tracking
- Data leakage through third-party scripts
6. Search and Catalog
- Search parameters
- Category filters
- Sorting
b) XSS
- Search results
- Product descriptions
- User reviews
c) Information disclosure
- Wholesale prices in response
- Inventory data
- Supplier information
7. Mobile App (if exists)
a) API security
- Authentication
- Certificate pinning bypass
- Sensitive data in local storage
b) Business logic
- Consistency with web version
- Mobile-specific vulnerabilities
Compliance and Regulations
PCI DSS
If you process card data:
Pentest requirements (11.3):
- Penetration tests at least annually
- After significant infrastructure changes
- External and internal tests
- Application layer tests
Scope:
- Cardholder Data Environment (CDE)
- Systems connected to CDE
- Segmentation testing
GDPR
Key areas:
- Personal data protection
- Right to erasure
- Data breach notification readiness
- Privacy by design
Consumer Law
- Fraud protection
- Price accuracy
- Terms and policies
Typical E-commerce Vulnerabilities
TOP 10 Findings
- IDOR in orders – access to other users’ orders
- Price manipulation – changing price in request
- Coupon abuse – multiple code usage
- Weak password reset – predictable tokens
- Missing rate limiting – brute force on login/codes
- XSS in reviews – user-generated content without sanitization
- SQL Injection in search – product filters
- Insecure direct object reference – access to profiles/addresses
- Business logic flaws – skipping payment, free shipping
- Admin panel exposure – /admin without protection
Real Scenario Examples
Scenario 1: Free Shopping
- Add product to cart
- Proceed to payment
- Intercept request with price
- Change value to 0.01
- Finalize order
Scenario 2: Gift Card Brute Force
- Identify gift card number format (16 digits)
- Discover pattern (fixed prefix, sequential rest)
- Brute force active numbers
- Use on own account
Scenario 3: Coupon Race Condition
- One-time discount code for -50%
- Open two browser windows
- Add same code in both simultaneously
- Both orders receive discount
E-commerce Testing Methodology
Phase 1: Reconnaissance
- Platform identification (Magento, WooCommerce, PrestaShop, custom)
- Functionality mapping
- Integration identification
- Understanding purchase flow
Phase 2: Authentication & Authorization
- Registration and login tests
- Password policy
- Session management
- Access control
Phase 3: Business Logic
- Price and quantity manipulation
- Discount codes and promotions
- Gift cards
- Checkout flow
Phase 4: Technical Vulnerabilities
- OWASP Top 10
- SQL Injection
- XSS
- CSRF
Phase 5: Integrations
- Payment gateway security
- Webhook validation
- API security
Phase 6: Admin Panel
- Access control
- Privilege escalation
- Critical function testing
Recommendations for E-commerce
Quick Wins
- Server-side validation of everything – prices, quantities, discounts
- Rate limiting – on login, password reset, promo codes
- Hide admin panel – non-standard URL, IP whitelist, VPN
- MFA for admins – mandatory
- Logging and monitoring – alerting on anomalies
Long-term
- Security by design – include security in development process
- Regular pentests – minimum annually, before season
- Bug bounty – for large platforms
- WAF – Web Application Firewall with e-commerce rules
- Fraud detection – fraud detection systems
Summary
E-commerce penetration testing requires:
- Business understanding – pentester must understand purchase flow
- Focus on business logic – not just technical CVEs
- Integration testing – payments, ERP, logistics
- Compliance consideration – PCI DSS, GDPR
- Seasonal approach – tests before Black Friday, holidays
E-commerce platform compromise isn’t just data leak – it’s loss of customer trust, regulatory penalties, and direct financial losses.
Running an e-commerce platform and want to examine its security? Contact us – we’ll conduct tests tailored to electronic commerce specifics.
Related Terms
Learn key terms related to this article in our cybersecurity glossary:
- IT Infrastructure Penetration Testing — IT infrastructure penetration testing is a controlled and ethical process of…
- Wi-Fi Network Penetration Testing — Wi-Fi network penetration testing is the process of assessing the security of…
- Penetration Testing — Penetration testing, also known as pentesting, is a controlled process of…
- Cybersecurity — Cybersecurity is a collection of techniques, processes, and practices used to…
- Cybersecurity Incident Management — Cybersecurity incident management is the process of identifying, analyzing,…
Learn More
Explore related articles in our knowledge base:
- IoT Penetration Testing - Objectives, Vulnerabilities, Stages, Actions and Legal Regulations
- Penetration Testing Automation with RidgeBot
- RidgeBot – Penetration Testing Automation
- RidgeGen: How Generative AI Revolutionizes Penetration Testing
- RidgeBot 6.0: AWS Security Audit and Advanced Windows Testing for Enterprises
Explore Our Services
Need cybersecurity support? Check out:
- Security Audits - comprehensive security assessment
- Penetration Testing - identify vulnerabilities in your infrastructure
- SOC as a Service - 24/7 security monitoring
Explore Our Products
Solutions mentioned in this article that can help protect your organization:
- RidgeBot — Ridge Security
Cybersecurity for Your Industry
Learn more about cybersecurity in your industry:
- Cybersecurity for Finance & Banking
- Cybersecurity for Manufacturing & Industry
- Cybersecurity for E-commerce & Retail
