Comprehensive security measures implemented in Omega-Core to protect users and data while maintaining accessibility.

• NextAuth.js v5 with JWT sessions
• Secure cookies with HttpOnly, Secure, and SameSite flags
• Session management with 30-day expiration and 24-hour update age
• Guest user support with limited permissions
• User isolation - users can only access their own data

• Zod schemas for all API inputs (prevents injection attacks)
• String sanitization - removes control characters and limits length
• HTML sanitization - removes script tags and event handlers
• URL validation - blocks localhost/private IPs in production
• UUID validation - ensures valid UUID format
• File name sanitization - prevents path traversal attacks
• Request size limits - prevents DoS via large payloads

• Token bucket algorithm (O(1) complexity)
• Per-route limits:
  • Chat API: 50 requests, 5/sec
  • File uploads: 20 requests, 2/sec
  • Other APIs: 100 requests, 10/sec
• Per-user and per-IP tracking
• Automatic cleanup to prevent memory leaks

All responses include:

• Content-Security-Policy - Prevents XSS attacks
• X-Content-Type-Options: nosniff - Prevents MIME sniffing
• X-Frame-Options: SAMEORIGIN - Prevents clickjacking
• X-XSS-Protection: 1; mode=block - Browser XSS protection
• Referrer-Policy - Controls referrer information
• Permissions-Policy - Restricts browser features
• Strict-Transport-Security - Forces HTTPS in production

• Drizzle ORM - Parameterized queries (prevents SQL injection)
• User isolation - All queries filtered by userId
• Input validation - All inputs validated before database operations
• Connection pooling - Reuses secure connections
• SSL required - Database connections use SSL

• File type validation - Only JPEG and PNG allowed
• Magic byte verification - Validates actual file type (not just extension)
• File size limits - 5MB maximum
• Filename sanitization - Prevents path traversal
• User isolation - Files stored in user-specific directories
• Content-Type validation - Zod schema validation

• Authentication required - All protected routes check session
• Authorization checks - Users can only access their own resources
• Request size limits - Prevents DoS attacks
• Error message sanitization - Doesn't leak sensitive information
• UUID validation - All IDs validated before use
• Input sanitization - All inputs sanitized before processing

• Command blacklist - Blocks dangerous commands
• Timeout protection - 1-30 second timeouts
• Output sanitization - Redacts sensitive information
• Production disabled - Requires ENABLE_SHELL_TOOL=true
• Rate limiting - Prevents abuse

• URL validation - Only http/https allowed
• Localhost blocking - Blocks localhost in production
• Content sanitization - Removes scripts and dangerous content
• Timeout protection - 10 second timeout
• Output limits - Maximum content length enforced

• User isolation - Users can only access their own memories
• Input sanitization - All content sanitized
• Rate limiting - Prevents abuse
• Vector search - Secure database queries

• React automatic escaping - React escapes by default
• HTML sanitization - Removes dangerous HTML
• Content Security Policy - Restricts script execution
• Input validation - Prevents malicious input

• SameSite cookies - Prevents CSRF attacks
• Secure cookies - HTTPS only in production
• NextAuth CSRF tokens - Built-in CSRF protection

1. Never commit secrets - All secrets in .env.local (gitignored)
2. Validate all inputs - Use Zod schemas
3. Sanitize outputs - Use sanitization utilities
4. Check authorization - Always verify user ownership
5. Rate limit APIs - Prevent abuse
6. Log security events - Monitor for attacks

1. Set strong AUTH_SECRET - Use openssl rand -base64 32
2. Use HTTPS - Always in production
3. Enable security headers - Already configured
4. Monitor rate limits - Watch for abuse
5. Keep dependencies updated - Regular security updates
6. Use environment variables - Never hardcode secrets

• ✅ Authentication required
• ✅ Rate limiting (50 req, 5/sec)
• ✅ Input validation (Zod)
• ✅ Request size limit (5MB)
• ✅ User isolation
• ✅ Error sanitization

• ✅ Authentication required
• ✅ UUID validation
• ✅ Input sanitization
• ✅ Request size limit (10MB)
• ✅ User ownership checks

• ✅ Authentication required
• ✅ File type validation
• ✅ Magic byte verification
• ✅ Filename sanitization
• ✅ User isolation
• ✅ Rate limiting (20 req, 2/sec)

• ✅ Authentication required
• ✅ UUID validation
• ✅ Input sanitization
• ✅ Parameter limits
• ✅ User isolation

• ✅ Authentication required
• ✅ UUID validation
• ✅ Input validation (Zod)
• ✅ User ownership checks

• No data leakage - Error messages don't expose sensitive info
• User data isolation - Users can't access other users' data
• Secure storage - All sensitive data encrypted
• Environment variables - All secrets in environment
• Git ignore - Sensitive files never committed

• Security events logged - Failed auth, rate limits, etc.
• Error logging - Server-side only (not exposed to clients)
• Rate limit headers - X-RateLimit-* headers for monitoring

• GDPR ready - User data isolation and deletion support
• Security best practices - OWASP Top 10 covered
• Industry standards - Follows Next.js and NextAuth security guidelines

If you discover a security vulnerability, please:

1. Do not open a public issue
2. Email security concerns privately
3. Include steps to reproduce
4. Allow time for fix before disclosure

• Authentication on all protected routes
• Input validation with Zod
• Output sanitization
• Rate limiting
• Security headers
• SQL injection prevention (Drizzle ORM)
• XSS prevention
• CSRF protection
• File upload security
• Error message sanitization
• Request size limits
• Secure cookies
• User data isolation
• UUID validation
• URL validation
• Content Security Policy

• Web Application Firewall (WAF)
• Advanced threat detection
• Security audit logging
• Penetration testing
• Automated security scanning

Remember: Security is an ongoing process. Always keep dependencies updated and monitor for new threats.