This document outlines the security measures implemented and additional steps needed for production deployment.

• Row Level Security (RLS) enabled on all Supabase tables
• All database queries filtered by user_id or proper ownership checks
• Authentication state management with secure session handling
• Password reset and email verification flows

• Error message sanitization to prevent information disclosure
• Input validation on all user inputs
• Safe error handling throughout the application
• No sensitive data in console logs (removed for production)

• HTTPS enforcement in production (configured in hosting)
• Content Security Policy (CSP) headers
• X-Frame-Options: DENY (prevents clickjacking)
• X-Content-Type-Options: nosniff
• Referrer-Policy: strict-origin-when-cross-origin
• X-XSS-Protection enabled

• Rate limiting implemented for Finnhub API
• API key validation and error handling
• Secure environment variable management
• No hardcoded secrets in code

• Parameterized queries (Supabase provides this)
• No SQL injection vulnerabilities
• Proper user data isolation
• Database connection security via Supabase

Ensure these are set in your production environment:

# Required Public Variables
NEXT_PUBLIC_SUPABASE_URL=your_supabase_url
NEXT_PUBLIC_SUPABASE_ANON_KEY=your_supabase_anon_key
NEXT_PUBLIC_FINNHUB_API_KEY=your_finnhub_api_key

# Required Server-Side Variables (Production)
SUPABASE_SERVICE_ROLE_KEY=your_service_role_key
SUPABASE_JWT_SECRET=your_jwt_secret

# Optional Variables
NEXT_PUBLIC_DEFAULT_PORTFOLIO_VALUE=10000

1. Enable RLS on all tables (already configured)
2. Review and audit RLS policies
3. Ensure backup strategy is in place
4. Monitor database access logs

1. Set up error monitoring (Sentry, LogRocket, etc.)
2. Configure uptime monitoring
3. Set up security alerts
4. Monitor API rate limits

1. Enable HTTPS/TLS (required)
2. Configure firewall rules
3. Set up DDoS protection
4. Regular security updates

• Secure password hashing (handled by Supabase)
• Session management with automatic refresh
• Email verification required
• Password reset with secure tokens

• Portfolio balance validation
• Trade quantity validation
• Ownership verification before selling
• Transaction logging and audit trail

• API rate limiting (5-minute cache)
• Error handling for API failures
• No sensitive market data exposed

• Profile data isolation by user ID
• Settings encrypted in transit
• Watchlist privacy by user

1. Client-side validation only - Consider adding server-side validation for critical operations
2. No email domain restrictions - Consider adding corporate email validation if needed
3. Basic rate limiting - May need enhanced rate limiting for high-traffic scenarios

1. Two-factor authentication (2FA)
2. Session timeout configuration
3. Advanced fraud detection
4. IP-based rate limiting
5. Audit log retention policies

1. Disable affected user accounts via Supabase Auth
2. Rotate API keys if compromised
3. Review audit logs for suspicious activity
4. Update dependencies if vulnerabilities found

• Primary Admin: [Your contact info]
• Backup Admin: [Backup contact info]
• Hosting Provider: [Hosting support contact]

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

• Monthly dependency updates
• Quarterly security audit
• Annual penetration testing
• Monitor CVE databases for relevant vulnerabilities

Last Updated: Production deployment date Review Schedule: Quarterly Next Review: [Date + 3 months]