We actively support the following versions of TraylinxAuthClient with security updates:

TraylinxAuthClient implements several security measures to protect your authentication credentials and communications:

• Comprehensive Parameter Validation: All configuration parameters are validated using Pydantic to prevent injection attacks
• URL Sanitization: API URLs are validated and sanitized to prevent malicious redirects
• UUID Format Validation: Agent User IDs must be valid UUIDs to prevent format-based attacks

• No Credential Logging: Tokens, secrets, and passwords are never logged or exposed in error messages
• Secure Memory Handling: Sensitive data is handled securely in memory and cleaned up appropriately
• Error Message Sanitization: Error messages are sanitized to prevent accidental credential exposure

• HTTPS Enforcement: All communications use HTTPS with proper certificate validation
• Timeout Protection: Configurable timeouts prevent hanging connections and resource exhaustion
• Rate Limit Handling: Built-in rate limiting protection with exponential backoff

• Automatic Token Refresh: Tokens are automatically refreshed before expiration
• Thread-Safe Token Management: Token access is protected with proper locking mechanisms
• Secure Token Storage: Tokens are stored securely in memory with appropriate cleanup

We take security vulnerabilities seriously. If you discover a security vulnerability in TraylinxAuthClient, please report it responsibly.

DO NOT create a public GitHub issue for security vulnerabilities.

Instead, please report security vulnerabilities through one of these channels:

1. Email: Send details to security@traylinx.com
2. GitHub Security Advisory: Use GitHub's private vulnerability reporting feature
3. Direct Contact: Contact the maintainers directly through secure channels

When reporting a vulnerability, please include:

• Description: Clear description of the vulnerability
• Impact: Potential impact and attack scenarios
• Reproduction: Step-by-step instructions to reproduce the issue
• Environment: Python version, library version, and operating system
• Proof of Concept: Code or commands that demonstrate the vulnerability (if applicable)
• Suggested Fix: If you have ideas for fixing the issue

Subject: [SECURITY] Vulnerability in TraylinxAuthClient v1.0.x

Description:
[Clear description of the vulnerability]

Impact:
[What could an attacker do with this vulnerability?]

Steps to Reproduce:
1. [First step]
2. [Second step]
3. [Additional steps...]

Environment:
- TraylinxAuthClient version: 1.0.x
- Python version: 3.x.x
- Operating System: [OS and version]

Proof of Concept:
[Code or commands that demonstrate the issue]

Suggested Fix:
[Your ideas for fixing the vulnerability]

We aim to respond to security reports according to the following timeline:

• Initial Response: Within 24 hours of receiving the report
• Vulnerability Assessment: Within 72 hours of initial response
• Fix Development: Depends on complexity, typically 1-2 weeks
• Security Release: Within 1 week of fix completion
• Public Disclosure: 30 days after fix release (coordinated disclosure)

When you report a vulnerability, we commit to:

1. Acknowledge Receipt: Confirm we received your report within 24 hours
2. Regular Updates: Provide status updates at least weekly during investigation
3. Credit: Acknowledge your contribution in the security advisory (if desired)
4. Coordinated Disclosure: Work with you on appropriate disclosure timing
5. Fix Priority: Treat security issues as high priority

We classify vulnerabilities using the following severity levels:

• Remote code execution
• Authentication bypass
• Credential theft
• Response Time: Immediate (within hours)

• Privilege escalation
• Information disclosure of sensitive data
• Denial of service attacks
• Response Time: Within 24 hours

• Limited information disclosure
• Input validation issues
• Configuration vulnerabilities
• Response Time: Within 72 hours

• Minor information leaks
• Non-exploitable issues
• Response Time: Within 1 week

When using TraylinxAuthClient, follow these security best practices:

# ✅ Good: Use environment variables
import os
client = TraylinxAuthClient(
    client_id=os.getenv('TRAYLINX_CLIENT_ID'),
    client_secret=os.getenv('TRAYLINX_CLIENT_SECRET'),
    api_base_url=os.getenv('TRAYLINX_API_BASE_URL'),
    agent_user_id=os.getenv('TRAYLINX_AGENT_USER_ID')
)

# ❌ Bad: Hard-coded credentials
client = TraylinxAuthClient(
    client_id="hardcoded_id",
    client_secret="hardcoded_secret",  # Never do this!
    # ...
)

# ✅ Good: Secure configuration
client = TraylinxAuthClient(
    # ... credentials from environment
    timeout=30,  # Reasonable timeout
    max_retries=3,  # Limited retries
    log_level="INFO"  # Don't use DEBUG in production
)

# ❌ Bad: Insecure configuration
client = TraylinxAuthClient(
    # ... credentials
    timeout=300,  # Too long, resource exhaustion risk
    max_retries=100,  # Too many, potential DoS
    log_level="DEBUG"  # May expose sensitive data
)

# ✅ Good: Secure error handling
try:
    result = client.authenticate()
except TraylinxAuthError as e:
    logger.error(f"Authentication failed: {e.error_code}")
    # Don't log the full exception (may contain sensitive data)

# ❌ Bad: Insecure error handling
try:
    result = client.authenticate()
except Exception as e:
    logger.error(f"Error: {str(e)}")  # May expose credentials
    print(f"Full error: {repr(e)}")   # Never print full errors

• Always validate input parameters
• Never log sensitive data (tokens, secrets, passwords)
• Use secure defaults for all configuration options
• Implement proper error handling without information leakage
• Follow the principle of least privilege

• Include security test cases in your test suite
• Test with invalid and malicious inputs
• Verify that sensitive data is not logged or exposed
• Test timeout and rate limiting behavior
• Use static analysis tools to detect security issues

Security updates are announced through:

• GitHub Security Advisories
• Release notes in CHANGELOG.md
• PyPI release notifications
• Email notifications to registered users (if applicable)

Always update to the latest version promptly when security updates are released:

# Update to latest version
pip install --upgrade traylinx-auth-client

# Or with Poetry
poetry update traylinx-auth-client

We follow responsible disclosure practices:

1. Private Reporting: Vulnerabilities are reported privately first
2. Investigation Period: We investigate and develop fixes privately
3. Coordinated Release: Security fixes are released with advance notice
4. Public Disclosure: Details are disclosed after fixes are available

We maintain a security hall of fame to recognize researchers who help improve our security:

• [Researcher Name] - [Vulnerability Type] - [Date]
• [Add your name by reporting a valid security issue!]

• Email: security@traylinx.com
• PGP Key: [Link to public key if available]
• Response Hours: Monday-Friday, 9 AM - 5 PM UTC

• Primary: @maintainer1
• Secondary: @maintainer2

• OWASP Top 10
• Python Security Guidelines
• GitHub Security Best Practices
• CVE Database

Thank you for helping keep TraylinxAuthClient secure!