Professional API Security Audits for Dutch Fintech

Comprehensive security assessments with PSD2, GDPR, and PCI-DSS compliance validation. Protect your customers, meet regulatory requirements, and build trust.

Get Your Security Audit
10 Days
Delivery Timeline
€3,500
Fixed Price Audit
OWASP Top 10
API Security Coverage
3 Regulations
PSD2 • GDPR • PCI-DSS

Security Audit Services

Professional API security testing with comprehensive compliance validation, delivered in 10 business days.

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Standard Security Audit

Complete OWASP API Security Top 10 assessment with detailed findings and remediation guidance.

  • OWASP API Top 10 testing
  • Authentication & authorization review
  • Injection vulnerability testing
  • Data exposure assessment
  • 30+ page professional report
  • Remediation code examples
€3,500
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Compliance Assessment

Regulatory compliance validation for Dutch fintech companies operating under DNB supervision.

  • PSD2 compliance review
  • GDPR user rights validation
  • PCI-DSS requirements check
  • Strong Customer Authentication (SCA)
  • Open Banking readiness
  • Regulator-ready reporting
Included
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Continuous Monitoring

Monthly security scanning with real-time alerts for new vulnerabilities and compliance drift.

  • Weekly automated scans
  • Real-time vulnerability alerts
  • Compliance dashboard
  • Monthly security reports
  • Priority email support
  • Annual comprehensive review
€199/mo

Case Study

Real-world security audit for a Dutch payment processing platform.

PayBridge Security Audit

Payment processing platform serving 200+ SMB merchants

Industry Fintech • Payments
Compliance PSD2 • GDPR • PCI-DSS
Timeline 10 days

Findings

1
Critical
2
High
4
Medium

Key Vulnerabilities Identified

  • CRITICAL: Broken Object Level Authorization - Merchants could access other merchants' transaction data
  • HIGH: JWT validation issues - Token signatures not properly verified
  • HIGH: SSRF vulnerability in webhook URLs - Internal network exposure risk
  • MEDIUM: Inconsistent rate limiting - DoS vulnerability on payment endpoints

Deliverables

30-page comprehensive security audit report including executive summary, detailed technical findings with proof-of-concept examples, before/after remediation code, OWASP API Top 10 assessment, PSD2/GDPR/PCI-DSS compliance analysis, risk assessment matrix, and 90-day remediation roadmap.

Get Your Security Audit

Professional API security assessment delivered in 10 business days. Fixed price, comprehensive coverage.

Contact Information

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Email

security@threestack.io

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Phone

+31 97 010 275 874

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Location

Amsterdam, Netherlands

What to Expect

  1. Email us with your API details and security concerns
  2. Receive intake questionnaire within 24 hours
  3. Get formal proposal with timeline and pricing
  4. Audit starts within 2 business days of approval
  5. Comprehensive report delivered in 10 business days

Why Choose ThreeStack?

🎯 Focused Expertise

We specialize exclusively in API security for Dutch fintech companies. Deep knowledge of PSD2, GDPR, and DNB requirements.

⚡ Fast Delivery

10-day turnaround with fixed pricing. No hidden costs, no scope creep. Professional report ready for board presentations and regulatory submissions.

🔒 Actionable Results

Not just vulnerability lists. Every finding includes business impact analysis, proof-of-concept examples, and working remediation code.

📋 Compliance Ready

Reports formatted for DNB, AFM, and auditor review. Includes regulatory citations, penalty warnings, and compliance checklists.