Fintech Security Architecture: AWS WAF Implementation with 7 Managed Rule Sets for OWASP Protection

Why This Matters

These results demonstrate the tangible business value of investing in the right technology infrastructure — from improved reliability to measurable cost savings.

Via-Hive's Challenge

Via-Hive, a rapidly growing fintech platform, was preparing for their Series B round when their security audit revealed critical gaps in their web application protection. With enterprise clients demanding SOC 2 compliance and handling sensitive financial data, they needed enterprise-grade security without building a dedicated security team.

Critical security challenges:

• OWASP Top 10 vulnerabilities including SQL injection and XSS attacks detected in penetration testing
• Public-facing APIs experiencing credential stuffing and brute force attacks from botnets
• DDoS attacks during product launches causing service degradation for legitimate users
• Small team with limited security expertise meant custom WAF rules were not maintainable
• Need for real-time visibility into blocked attacks for compliance reporting and incident response

Implementation Details

• Core Rule Set blocking SQL injection, XSS, and local file inclusion attacks
• Known Bad Inputs rule set protecting against Log4j, Spring4Shell, and similar CVEs
• IP Reputation list blocking requests from known malicious IP addresses

Edge-Level Protection

• WAF WebACL attached to CloudFront distribution for edge-level filtering before requests reach origin
• AWS Shield Standard providing automatic DDoS protection for volumetric attacks
• Rate limiting rules preventing credential stuffing and API abuse

Security Monitoring & Compliance

Enabled CloudWatch metrics and sampled request logging for security monitoring. Built dashboards showing blocked attack patterns, top attacking IPs, and rule trigger frequencies — essential evidence for SOC 2 audit documentation.