This document outlines the security measures implemented in DocMagic and best practices for maintaining a secure deployment.

• Supabase Auth Integration: Secure JWT-based authentication
• Protected Routes: Middleware-based route protection
• Session Management: Automatic token refresh and secure session handling
• Password Requirements: Strong password validation (8+ chars, mixed case, numbers)

• Zod Schema Validation: Type-safe input validation for all API endpoints
• SQL Injection Protection: Pattern detection and input sanitization
• XSS Prevention: HTML sanitization and Content Security Policy
• Rate Limiting: API endpoint protection against abuse

• Content Security Policy (CSP): Prevents XSS and code injection
• X-Frame-Options: Prevents clickjacking attacks
• X-Content-Type-Options: Prevents MIME type sniffing
• Strict-Transport-Security: Enforces HTTPS connections
• X-XSS-Protection: Browser XSS filtering
• Referrer-Policy: Controls referrer information

• CORS Configuration: Restrictive cross-origin policies
• Webhook Signature Verification: Stripe webhook security
• Environment Variable Validation: Runtime checks for required secrets
• Error Handling: Secure error responses without sensitive data exposure

• Environment Variables: No hardcoded secrets in code
• Secure Headers: All sensitive data transmitted securely
• Input Length Limits: Prevents buffer overflow attacks
• File Upload Validation: Type and size restrictions

Ensure these environment variables are properly configured:

# Required Security Variables
NEXTAUTH_SECRET=your-nextauth-secret-here-use-openssl-rand-base64-32
NEXT_PUBLIC_SUPABASE_URL=https://your-project-id.supabase.co
NEXT_PUBLIC_SUPABASE_ANON_KEY=your-supabase-anon-key-here
SUPABASE_SERVICE_ROLE_KEY=your-supabase-service-role-key-here
GEMINI_API_KEY=your-gemini-api-key-here

# Optional but Recommended
STRIPE_WEBHOOK_SECRET=whsec_your_webhook_secret_here

Current rate limits (per IP address):

• Authentication endpoints: 10 requests per 15 minutes
• Generation endpoints: 20 requests per 15 minutes
• General API endpoints: 100 requests per 15 minutes

The CSP header allows:

• Scripts from self and Stripe
• Styles from self and Google Fonts
• Images from self, data URLs, and HTTPS sources
• Connections to Supabase, Stripe, and Gemini API

1. Never commit secrets: Use environment variables for all sensitive data
2. Validate all inputs: Use the validation schemas in lib/validation.ts
3. Sanitize user content: Use provided sanitization functions
4. Check authentication: Verify user sessions in protected API routes
5. Log security events: Use logSecurityEvent() for monitoring

1. Use HTTPS: Always deploy with SSL/TLS certificates
2. Environment isolation: Separate development and production environments
3. Regular updates: Keep dependencies updated for security patches
4. Monitor logs: Watch for security events and failed authentication attempts
5. Backup strategy: Regular database backups with encryption

1. Strong passwords: Enforce minimum password requirements
2. Account security: Monitor for suspicious login attempts
3. Data privacy: Only collect necessary user information
4. Secure sessions: Automatic logout after inactivity

Security events are logged for:

• Failed authentication attempts
• Rate limit violations
• Invalid input detection
• Webhook signature failures
• CSRF protection triggers

• Review authentication logs regularly
• Monitor API rate limit violations
• Check for unusual traffic patterns
• Verify webhook signature validations
• Monitor database access patterns

{
  "headers": [
    {
      "source": "/(.*)",
      "headers": [
        { "key": "X-Frame-Options", "value": "DENY" },
        { "key": "X-Content-Type-Options", "value": "nosniff" },
        { "key": "Strict-Transport-Security", "value": "max-age=31536000" }
      ]
    }
  ]
}

Security headers are configured in netlify.toml with:

• CSP policy
• Frame protection
• XSS protection
• CORS restrictions

1. Test authentication flows
2. Verify rate limiting works
3. Check input validation
4. Test CORS policies
5. Verify webhook signatures

Consider implementing:

• Security scanning in CI/CD
• Dependency vulnerability checks
• Automated penetration testing
• Regular security audits

1. Do not create a public issue
2. Email security concerns to: [your-security-email]
3. Include detailed reproduction steps
4. Allow time for investigation and patching

1. Assess the severity and impact
2. Implement immediate containment
3. Develop and test a fix
4. Deploy the fix to production
5. Notify affected users if necessary
6. Document lessons learned

• OWASP Top 10
• Next.js Security
• Supabase Security
• Stripe Security

Last Updated: January 2025 Security Review: Required every 6 months