Terminal Chat is designed for PRIVATE NETWORKS ONLY.

This application should NOT be deployed on the public internet without significant additional security measures. It is intended for:

• Home LANs
• Office networks
• VPN-connected users
• Development/testing environments
• Educational purposes

✅ Encryption

• AES-256-CBC for message content
• PBKDF2 key derivation
• Per-message encryption

✅ File Permissions

• Granular access control
• Private file sharing
• Permission tracking

✅ Docker Security

• Resource limits
• Isolated networks
• Read-only mounts
• Health monitoring

⚠️ Missing Security Features

• ❌ No TLS/SSL transport encryption
• ❌ No user authentication system
• ❌ No rate limiting
• ❌ No input validation hardening
• ❌ No session management
• ❌ No audit logging for security events

If you discover a security vulnerability, please:

1. Open a private security advisory on GitHub (Security → Advisories → New draft)
2. Include:
   • Description of the vulnerability
   • Steps to reproduce
   • Potential impact
   • Suggested fix (if any)
3. Give maintainers reasonable time to assess and fix before public disclosure

• ❌ Open public GitHub issues for security vulnerabilities
• ❌ Post on social media or forums
• ❌ Exploit the vulnerability maliciously

1. Network Isolation

   # Use firewall to restrict access
   sudo ufw allow from 192.168.1.0/24 to any port 4444

2. Strong Passwords

   # Generate secure password
   openssl rand -hex 32

3. VPN Access

   • Use WireGuard or OpenVPN
   • Don't expose directly to internet

4. Docker Security

   # Resource limits
   deploy:
     resources:
       limits:
         cpus: '1.0'
         memory: 512M

5. Regular Updates

   # Keep system updated
   sudo apt update && sudo apt upgrade

1. Use test passwords - Never use production passwords in tests
2. Separate environments - Dev, staging, production
3. Review code - All security-related changes need review
4. Run tests - Ensure security features work
5. Static analysis - Use security scanning tools

See docs/security/SECURITY_ENHANCEMENT_CONCEPT.md for detailed improvement plans.

1. TLS/SSL Transport

   • Encrypt the TCP connection
   • Use Let's Encrypt certificates
   • Implement with nginx/traefik reverse proxy

2. User Authentication

   • Proper login system
   • Password hashing (bcrypt/argon2)
   • Session management
   • Account lockout after failed attempts

3. Rate Limiting

   • Per-user message limits
   • Connection throttling
   • File upload size limits
   • IP-based rate limiting

4. Input Validation

   • Sanitize all user inputs
   • Validate file uploads
   • Prevent injection attacks
   • Command input filtering

5. Audit Logging

   • Security event logging
   • Failed login attempts
   • Permission violations
   • Configuration changes

• TLS/SSL support
• User authentication
• Rate limiting
• Session management
• Security audit logging

• End-to-end encryption (beyond message content)
• Multi-factor authentication
• Role-based access control
• Security scanning integration
• Compliance certifications

Current security level: ⚠️ Private Network Only

• Security Assessment
• Enhancement Concept
• Docker Security
• OWASP Top 10
• Python Security

This project follows responsible disclosure principles:

1. Report - Use GitHub Security Advisories
2. Assessment - Maintainers evaluate severity and impact
3. Fix - Develop and test a solution
4. Release - Deploy the fix
5. Disclosure - Public disclosure with contributor credit (if desired)

Contributors who responsibly disclose vulnerabilities will be listed here (with permission):

• Be the first!

• Security Issues: GitHub Security Advisories (preferred)
• General Issues: GitHub Issues
• Questions: GitHub Discussions

This software is provided "as is" without warranty of any kind. Use at your own risk, especially on public networks. See LICENSE for full terms.

Stay secure! 🔒