foxhunt/docs/SECURITY.md

Foxhunt Security Implementation

🔒 Overview

The Foxhunt HFT trading system implements enterprise-grade security measures designed to protect against threats while maintaining ultra-low latency performance. This document outlines the comprehensive security implementations and best practices.

🛡️ Security Architecture

Defense in Depth

The security system implements multiple layers of protection:

1. Network Security - TLS 1.3, firewall rules, VPN access
2. Authentication - Multi-factor authentication, secure session management
3. Authorization - Role-based access control with fine-grained permissions
4. Input Validation - Comprehensive sanitization and injection prevention
5. Audit Logging - Complete security event tracking and SIEM integration
6. Encryption - AES-256-GCM for data at rest and in transit
7. Secrets Management - HashiCorp Vault integration

Security Components

┌─────────────────────────────────────────────────────────┐
│                    Web Application                        │
├─────────────────────────────────────────────────────────┤
│  Authentication Middleware │ Authorization Middleware    │
├─────────────────────────────────────────────────────────┤
│  Input Validation          │ Rate Limiting              │
├─────────────────────────────────────────────────────────┤
│  Audit Logger              │ SIEM Integration           │
├─────────────────────────────────────────────────────────┤
│  Encryption Manager        │ Secrets Manager            │
├─────────────────────────────────────────────────────────┤
│  HashiCorp Vault           │ Database Security          │
└─────────────────────────────────────────────────────────┘

🔐 Authentication & Authorization

Authentication Methods

1. JWT Token Authentication

   • Secure JWT tokens with 1-hour expiration
   • Argon2 password hashing with salt
   • Session management with automatic timeout
   • Account lockout after 5 failed attempts

2. API Key Authentication

   • Prefixed API keys (foxhunt_) with SHA-256 hashing
   • Configurable expiration and rate limiting
   • IP address restrictions (optional)
   • Granular permission scoping

3. Multi-Factor Authentication (Optional)

   • TOTP-based (Google Authenticator compatible)
   • Backup codes for recovery
   • Required for admin accounts

User Roles & Permissions

Role	Permissions	Description
Admin	All permissions	System administrators
TradingManager	Portfolio + Risk + View	Senior traders
Trader	Execute + Modify + Cancel orders	Active traders
RiskManager	Risk limits + Emergency stop	Risk oversight
Analyst	View positions + Historical data	Quantitative analysts
ComplianceOfficer	Audit logs + Compliance reports	Regulatory compliance
Viewer	Read-only access	Observers
ApiUser	API access only	Automated systems
Auditor	Audit logs + System config	External auditors

Permission Matrix

Resource	Admin	TradingManager	Trader	RiskManager	Analyst	ComplianceOfficer	Viewer	ApiUser	Auditor
Execute Trades	✅	✅	✅	❌	❌	❌	❌	✅	❌
Modify Orders	✅	✅	✅	❌	❌	❌	❌	✅	❌
Cancel Orders	✅	✅	✅	❌	❌	❌	❌	✅	❌
View Positions	✅	✅	✅	✅	✅	✅	✅	✅	✅
Set Risk Limits	✅	❌	❌	✅	❌	❌	❌	❌	❌
Emergency Stop	✅	✅	❌	✅	❌	❌	❌	❌	❌
View Audit Logs	✅	✅	❌	✅	❌	✅	❌	❌	✅
System Admin	✅	❌	❌	❌	❌	❌	❌	❌	❌

🔒 Input Validation & Security

Validation Rules

The system implements comprehensive input validation:

1. Symbol Validation

   • Pattern: ^[A-Z0-9._-]+$
   • Length: 1-20 characters
   • No SQL injection patterns

2. Order Validation

   • Quantity: 1-1,000,000,000 (no zero or negative)
   • Price: 0.01-1,000,000.00 (for limit orders)
   • Finite numbers only (no NaN/Infinity)

3. User Input Validation

   • Email: RFC 5322 compliant format
   • Username: Alphanumeric with limited special chars
   • Password: Minimum 12 chars, complexity requirements

4. Injection Prevention

   • SQL injection pattern detection
   • XSS payload detection
   • Command injection prevention
   • NoSQL injection protection

Security Patterns Detected

The system automatically detects and blocks:

# SQL Injection
(?i)(union|select|insert|update|delete|drop|exec|execute)
('|\"|;|--|\|\/\*|\*\/)

# XSS
(\<|\>|&lt;|&gt;|&amp;)
(?i)(script|javascript|vbscript|onload|onerror)

# Command Injection  
(;|\||&|`|\$\()

📝 Audit Logging & Monitoring

Audit Events

All security-relevant events are logged:

• Authentication Events: Login success/failure, token issued/expired
• Authorization Events: Permission granted/denied, role changes
• Trading Events: Order placed/cancelled, trades executed
• Administrative Events: Configuration changes, user management
• Security Events: Suspicious activity, security breaches

Log Format

{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "timestamp": "2023-12-07T10:30:00Z",
  "event_type": "LoginSuccess", 
  "user_id": "123e4567-e89b-12d3-a456-426614174000",
  "username": "trader@foxhunt.com",
  "ip_address": "192.168.1.100",
  "user_agent": "Mozilla/5.0...",
  "resource": "orders",
  "action": "create",
  "result": "success",
  "metadata": {
    "session_id": "session-123",
    "order_id": "order-456"
  },
  "severity": "info"
}

SIEM Integration

• Splunk integration for enterprise monitoring
• Elasticsearch support for log analysis
• Real-time alerting for security incidents
• Threat intelligence integration

🔐 Encryption & Secrets Management

Encryption Standards

1. Data at Rest

   • AES-256-GCM encryption
   • Key rotation every 90 days
   • Hardware Security Module (HSM) support

2. Data in Transit

   • TLS 1.3 minimum version
   • Perfect Forward Secrecy
   • Certificate pinning

3. Application Secrets

   • HashiCorp Vault integration
   • Automatic secret rotation
   • Encrypted environment variables

Secrets Management

# Vault Integration Example
vault write secret/foxhunt/prod/db \
  username="prod_user" \
  password="secure_password"

vault write secret/foxhunt/prod/api \
  polygon_key="your_key" \
  jwt_secret="your_jwt_secret"

⚡ Performance Considerations

Low-Latency Security

Security implementations are optimized for HFT requirements:

• Authentication: < 100μs token validation
• Authorization: < 50μs permission checks
• Input Validation: < 10μs for order validation
• Audit Logging: Asynchronous, non-blocking
• Encryption: Hardware-accelerated when available

Caching Strategy

• JWT Claims: Cached for session duration
• User Permissions: 5-minute cache TTL
• Rate Limits: In-memory sliding window
• Audit Events: Batched writes every 1 second

🚨 Incident Response

Security Incidents

1. Detection: SIEM alerts, anomaly detection
2. Analysis: Log correlation, threat hunting
3. Containment: Account lockout, service isolation
4. Eradication: Malware removal, vulnerability patching
5. Recovery: Service restoration, monitoring
6. Lessons Learned: Process improvement, training

Emergency Procedures

• Emergency Stop: Halt all trading activities
• Account Lockout: Disable compromised accounts
• Service Isolation: Network segmentation
• Incident Communication: Stakeholder notification

🔧 Configuration

Environment Variables

Critical security configuration (see .env.example):

# JWT Configuration
FOXHUNT_JWT_SECRET=your-64-character-secret
FOXHUNT_SESSION_TIMEOUT_MINUTES=480

# Authentication
FOXHUNT_MAX_FAILED_ATTEMPTS=5
FOXHUNT_LOCKOUT_DURATION_MINUTES=15
FOXHUNT_PASSWORD_MIN_LENGTH=12

# Encryption
FOXHUNT_ENCRYPTION_ALGORITHM=AES-256-GCM
FOXHUNT_TLS_VERSION=1.3

# Vault
FOXHUNT_VAULT_URL=https://vault.example.com
FOXHUNT_VAULT_TOKEN=hvs.your-token-here

Production Checklist

• Generate strong JWT secret (64+ characters)
• Configure HashiCorp Vault for secrets
• Enable TLS 1.3 with valid certificates
• Set up SIEM integration (Splunk/ELK)
• Configure firewall rules and VPN access
• Enable MFA for all admin accounts
• Set appropriate session timeouts
• Configure audit log retention (90+ days)
• Set up automated security scanning
• Configure backup and disaster recovery

🧪 Security Testing

Test Coverage

The security test suite includes:

1. Authentication Tests

   • Valid/invalid credentials
   • Token validation and expiration
   • Account lockout scenarios
   • Concurrent authentication

2. Authorization Tests

   • Role-based access control
   • Permission boundary testing
   • Privilege escalation prevention

3. Input Validation Tests

   • SQL injection attempts
   • XSS payloads
   • Command injection
   • Buffer overflow attempts
   • Malformed JSON payloads

4. Security Integration Tests

   • End-to-end authentication flows
   • Audit log verification
   • Rate limiting enforcement
   • Session management

Running Security Tests

# Run comprehensive security test suite
cargo test security_integration_tests

# Run specific security tests
cargo test test_authentication_integration
cargo test test_input_validation_comprehensive
cargo test test_authorization_roles

# Run security benchmarks
cargo bench security_benchmarks

🔍 Vulnerability Management

Security Scanning

Regular security assessments include:

• SAST: Static Application Security Testing
• DAST: Dynamic Application Security Testing
• Dependency Scanning: Known vulnerability detection
• Container Scanning: Docker image vulnerabilities
• Infrastructure Scanning: Cloud security posture

Penetration Testing

Annual penetration testing covers:

• External Attack Surface: Internet-facing services
• Internal Networks: Lateral movement scenarios
• Application Security: Business logic flaws
• Social Engineering: Phishing simulations
• Physical Security: Data center access

📋 Compliance

Regulatory Compliance

The security implementation supports:

• SOX: Audit trails and access controls
• PCI DSS: Secure payment card handling
• GDPR: Privacy by design and data protection
• FINRA: Financial services requirements
• MiFID II: European markets compliance
• SOC 2 Type II: Security and availability controls

Security Certifications

Target certifications:

• ISO 27001 (Information Security Management)
• SOC 2 Type II (Security and Availability)
• PCI DSS Level 1 (Payment Card Security)

🆘 Security Contacts

Security Team

• Security Officer: security@foxhunt.com
• Incident Response: incident@foxhunt.com
• Vulnerability Reports: security-reports@foxhunt.com

Emergency Contacts

• 24/7 Security Hotline: +1-555-SEC-HELP (555-732-4357)
• Incident Response Team: incident-team@foxhunt.com

📚 Additional Resources

Documentation

• Authentication API Reference
• Authorization Guide
• Deployment Security
• Incident Response Playbook

Security Training

• Security awareness training for all staff
• Secure coding practices for developers
• Incident response training for operations
• Regular security updates and briefings

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Last Updated: December 2024
Version: 1.0
Classification: Internal Use Only