Billing Webhook Security Validation #393
Description
Billing Webhook Security Validation
Request Type: New Feature
👤 User Story
As a SaaS platform security administrator, I want comprehensive webhook security validation so that I can ensure all incoming billing webhooks are authentic and prevent malicious attacks on the billing system.
Route URL
/api/billing/webhooks/security
🚨 Problem Statement, Use Case, or Opportunity
Currently, there is no comprehensive security validation system for billing webhooks, which creates security vulnerabilities and potential for malicious attacks on billing systems. Without proper validation, the system is exposed to webhook spoofing, replay attacks, and data manipulation attempts.
💡 Proposed Solution
Implement a comprehensive webhook security validation system with:
- Webhook signature verification using provider-specific algorithms
- Timestamp validation to prevent replay attacks
- IP address whitelist validation for known providers
- Request header validation and sanitization
- Payload integrity verification and validation
- Rate limiting for webhook endpoints
- Suspicious activity detection and blocking
- Security event logging and alerting
✅ Acceptance Criteria
- Webhook signature verification for all supported providers
- Timestamp validation to prevent replay attacks
- IP address whitelist management and validation
- Request header validation and sanitization
- Payload integrity verification and schema validation
- Rate limiting implementation for webhook endpoints
- Suspicious activity detection and automatic blocking
- Security event logging with detailed audit trails
- API endpoints for security configuration and monitoring
- Unit tests covering all security validation scenarios
📈 Impact, Risks and Benefits
Benefits:
- Enhanced security against webhook-based attacks
- Protection from spoofing and replay attacks
- Improved system integrity and data protection
- Compliance with security best practices
Risks:
- False positives blocking legitimate webhooks
- Complex implementation across multiple providers
- Performance impact from extensive validation
- Maintenance overhead for security configurations
Impact:
- Critical for billing system security and integrity
- Essential for protecting against financial fraud
- Important for regulatory compliance and trust
📚 Context and Examples
Similar to how platforms like Stripe, GitHub, or PayPal implement webhook security with signature verification and comprehensive validation.
🔧 Technical Requirements
- Backend/API changes required
- Database schema changes required
- Third-party integrations needed
- Documentation updates needed
- Tests must be written
🖇️ Related Issues
Related to webhook processing, security infrastructure, fraud prevention, and billing system protection.