We actively maintain security updates for the following versions:

• JWT Authentication: Secure token-based authentication using Clerk
• User Scoped Access: All data operations are scoped to authenticated users
• Session Management: Automatic token validation and user context

• Zod Schema Validation: Comprehensive input validation on all endpoints
• SQL Injection Prevention: Parameterized queries with Drizzle ORM
• File Upload Security: Restricted MIME types and filename validation
• Search Input Sanitization: Escaped special characters to prevent injection

• Rate Limiting: Configurable rate limits per user/IP (100 req/15min default)
• File Upload Limits: Stricter limits for file operations (10 req/15min)
• CORS Configuration: Restricted to specific allowed origins
• Request Body Limits: Configurable file size limits with 35% buffer

• Content Security Policy (CSP): Restrictive policy preventing XSS
• X-Frame-Options: DENY to prevent clickjacking
• X-Content-Type-Options: nosniff to prevent MIME confusion
• X-XSS-Protection: Browser XSS filter enabled
• Strict-Transport-Security: HSTS in production environments
• Referrer-Policy: Strict referrer policy

• Authentication Required: All WS operations require valid JWT
• Connection Limits: Maximum 20 connections per user
• Rate Limiting: 300 messages per minute per connection
• Authentication Timeout: 30 second timeout for unauthenticated connections
• Message Validation: All incoming messages validated against schemas
• HMAC Message Authentication: Optional cryptographic message signing for enhanced security

• Client-Side Encryption: Optional end-to-end encryption for sensitive data
• Database Encryption: SSL/TLS enforced for database connections
• Environment Variables: Sensitive configuration externalized
• Error Sanitization: Stack traces hidden in production

• Database Security: Foreign key constraints and transaction safety
• Logging: Security events logged with unique error IDs
• Environment Separation: Development vs production error handling

We take security seriously. If you discover a security vulnerability, please follow these steps:

• Email: security@typelets.com
• GitHub Security Advisories: Use the private vulnerability reporting feature

• Description of the vulnerability
• Steps to reproduce the issue
• Potential impact assessment
• Suggested remediation (if any)

• Initial Response: Within 48 hours
• Assessment: Within 5 business days
• Fix Timeline: Varies by severity
  • Critical: 24-48 hours
  • High: 1 week
  • Medium: 2 weeks
  • Low: Next minor release

• We follow coordinated disclosure
• Public disclosure after fix is deployed
• Credit will be given to reporters (unless requested otherwise)

# Required security environment variables
CLERK_SECRET_KEY=your_clerk_secret_key
DATABASE_URL=postgresql://... # Use SSL in production
# Optional security configuration
WS_RATE_LIMIT_MAX_MESSAGES=300
WS_MAX_CONNECTIONS_PER_USER=20
WS_AUTH_TIMEOUT_MS=30000
MAX_FILE_SIZE_MB=50
CORS_ORIGINS=https://yourdomain.com,https://app.yourdomain.com

• Use HTTPS only in production
• Configure proper CORS origins
• Set NODE_ENV=production
• Use secure database connections (SSL)
• Implement proper logging and monitoring
• Regular security updates

• Default: 100 requests per 15 minutes per user/IP
• File uploads: 10 operations per 15 minutes
• WebSocket: 300 messages per minute per connection
• Configurable via environment variables

• Allowed MIME types: images, PDFs, text files
• Maximum file size: 50MB (configurable)
• Filename validation prevents path traversal
• Client-side encryption recommended for sensitive files

• All user inputs validated with Zod schemas
• Database queries use parameterized statements
• No secrets in code or logs
• Error messages don't expose sensitive information
• Authentication required for protected endpoints
• Rate limiting considered for expensive operations

• Security tests pass
• Input validation tests included
• Authentication/authorization tests cover edge cases
• Error handling tests verify no information leakage

• In-memory rate limiting (resets on server restart)
• In-memory nonce tracking (resets on server restart)
• No distributed session management
• Client-side encryption keys not managed by server

• Use Redis for production rate limiting and nonce tracking
• Implement session management for multi-server deployments
• Consider external key management for enterprise use
• Implement LRU cache for nonce management to prevent memory leaks

We monitor and update dependencies for security vulnerabilities:

• Automated dependency scanning
• Regular security patches
• Major version updates evaluated for security impact

• @clerk/backend - Authentication
• drizzle-orm - Database ORM
• hono - Web framework
• ws - WebSocket implementation
• zod - Input validation

This API implements security controls aligned with:

• OWASP Web Application Security Project guidelines
• Modern web security best practices
• Input validation and output encoding standards
• Secure authentication and session management

For questions about our security practices, please contact security@typelets.com.