Fintech Penetration Testing
Fintech penetration testing — PCI DSS, SOC 2, and GLBA compliance, payment processing security, mobile banking apps, and API assessment.
2026-08-24
Fintech companies operate under some of the strictest security requirements of any industry. Between PCI DSS, SOC 2, GLBA, and state financial regulations, a comprehensive penetration testing program is not optional — it is a regulatory necessity.
The regulatory landscape
Most fintech companies must satisfy multiple overlapping frameworks:
| Regulation | Pentest requirement |
|---|---|
| PCI DSS v4.0 | Requirement 11.4 — annual pentest after significant changes |
| SOC 2 | Expected by auditors — annual pentest as part of Trust Services Criteria |
| GLBA Safeguards Rule | Explicitly requires periodic penetration testing |
| NY DFS 500 | Annual penetration testing required |
What to test in a fintech environment
Payment processing. Cardholder data environments (CDE) have specific PCI DSS requirements. Your pentest must demonstrate that the CDE is properly isolated from the rest of your network.
Mobile banking apps. Mobile apps introduce unique attack vectors: jailbreak/root detection bypass, certificate pinning, local data storage, and side-channel leaks. Test both the client-side app and its backend APIs.
Financial APIs. Trading platforms, payment APIs, and account management endpoints must be tested for BOLA, injection, and rate limiting vulnerabilities.
Treasury and settlement systems. These high-value targets often process large financial transactions. Test for transaction tampering, replay attacks, and authorization bypass.
Key findings in fintech pentests
The most common critical and high findings in fintech environments include:
- Broken object-level authorization in financial APIs
- Insecure direct object references in account management
- Weak JWT or session management
- Missing rate limiting on login and money movement endpoints
- Sensitive data exposure in API responses
Get your fintech environment tested
Affordable Pentesting delivers PCI DSS, SOC 2, and GLBA-ready reports. Launch a pentest for your fintech platform, or view pricing for plans starting at $199 for external IP testing.
Related reading: API Security Penetration Testing