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Security: Sunagatov/Yulia-Lingo

Security

SECURITY.md

Security Policy

Supported Versions

We actively support the following versions with security updates:

Version Supported
2.0.x βœ…
1.x.x ❌

Security Features

πŸ›‘οΈ Built-in Security Measures

Input Validation & Sanitization

  • All user inputs are validated and sanitized before processing
  • Length limits on all text inputs to prevent buffer overflow attacks
  • Character validation to prevent injection attacks
  • SQL injection prevention through parameterized queries only

Database Security

  • Parameterized queries for all database operations
  • Connection pooling with proper resource management
  • Database user isolation with minimal required permissions
  • Audit logging for security monitoring
  • Connection encryption support (configurable SSL/TLS)

Network Security

  • HTTPS-only external API calls
  • Host allowlisting for external services to prevent SSRF attacks
  • Request timeout limits to prevent resource exhaustion
  • Rate limiting through connection pooling

Application Security

  • Structured logging to prevent log injection attacks
  • Resource limits to prevent DoS attacks
  • Graceful error handling without information disclosure
  • Secure configuration management with environment variables
  • Non-root container execution in Docker deployments

Container Security

  • Multi-stage Docker builds for minimal attack surface
  • Read-only filesystem in production containers
  • Non-privileged user execution (UID 65534)
  • No shell access in production images (scratch-based)
  • Security scanning friendly image structure

πŸ”’ Configuration Security

Environment Variables

# Database Security
DB_SSL_MODE=require                    # Enable SSL for database connections
POSTGRESQL_PASSWORD=<strong-password>  # Use strong passwords

# Application Security
LOG_LEVEL=info                        # Avoid debug logs in production
GRACEFUL_SHUTDOWN_TIME=30s           # Proper cleanup on shutdown

# API Security
TRANSLATE_API_KEY=<secure-key>       # Secure API keys

Docker Security

# docker-compose.yml security settings
security_opt:
  - no-new-privileges:true
read_only: true
user: "65534:65534"

🚨 Security Best Practices

Deployment Security

  1. Use strong passwords for all database connections
  2. Enable SSL/TLS for database connections in production
  3. Regularly update container images and dependencies
  4. Monitor logs for suspicious activities
  5. Implement network segmentation using Docker networks
  6. Use secrets management for sensitive configuration

Operational Security

  1. Regular security updates - Keep dependencies up to date
  2. Log monitoring - Monitor application logs for security events
  3. Access control - Limit access to production systems
  4. Backup security - Encrypt and secure database backups
  5. Incident response - Have a plan for security incidents

Development Security

  1. Code review - All changes should be reviewed
  2. Dependency scanning - Regularly scan for vulnerable dependencies
  3. Static analysis - Use security-focused static analysis tools
  4. Secrets management - Never commit secrets to version control

πŸ” Security Monitoring

Audit Logging

The application includes comprehensive audit logging:

  • Database operations
  • User interactions
  • API calls
  • Error conditions
  • Security events

Health Checks

Built-in health checks monitor:

  • Database connectivity
  • Application responsiveness
  • Resource utilization
  • Security status

Metrics & Monitoring

Recommended monitoring:

  • Failed authentication attempts
  • Unusual traffic patterns
  • Database connection issues
  • Error rates and types
  • Resource consumption

🚨 Reporting Security Vulnerabilities

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

Reporting Process

  1. DO NOT create a public GitHub issue for security vulnerabilities
  2. Email security reports to: [security@example.com]
  3. Include detailed information about the vulnerability
  4. Provide steps to reproduce the issue if possible
  5. Wait for acknowledgment before public disclosure

What to Include

  • Description of the vulnerability
  • Steps to reproduce
  • Potential impact assessment
  • Suggested fix (if known)
  • Your contact information

Response Timeline

  • 24 hours: Initial acknowledgment
  • 72 hours: Initial assessment and triage
  • 7 days: Detailed response with timeline
  • 30 days: Target resolution for critical issues

πŸ› οΈ Security Development Lifecycle

Code Security

  • All code follows secure coding practices
  • Input validation at multiple layers
  • Proper error handling without information disclosure
  • Resource management and cleanup
  • Secure defaults in configuration

Testing Security

  • Security-focused unit tests
  • Integration tests for security features
  • Dependency vulnerability scanning
  • Container security scanning
  • Static code analysis

Deployment Security

  • Secure container images
  • Network isolation
  • Resource limits
  • Health monitoring
  • Incident response procedures

πŸ“‹ Security Checklist

Before Deployment

  • All dependencies updated to latest secure versions
  • Environment variables properly configured
  • SSL/TLS enabled for database connections
  • Strong passwords configured
  • Container security settings applied
  • Network isolation configured
  • Monitoring and logging enabled
  • Backup procedures tested
  • Incident response plan ready

Regular Maintenance

  • Monthly dependency updates
  • Quarterly security reviews
  • Log analysis for security events
  • Performance and security monitoring
  • Backup integrity verification
  • Access control review
  • Documentation updates

πŸ”— Security Resources

External Security Tools

Security Scanning

  • gosec - Go security analyzer
  • nancy - Dependency vulnerability scanner
  • trivy - Container vulnerability scanner
  • hadolint - Dockerfile security linter

Remember: Security is an ongoing process, not a one-time setup. Regular updates, monitoring, and reviews are essential for maintaining a secure application.

There aren’t any published security advisories