Security Audit Checklist

Security Audit Checklist

Comprehensive security audit checklist for PATAS deployment.

1. Authentication & Authorization

• API keys properly validated
• Rate limiting enforced per API key
• API keys stored securely (hashed, not plaintext)
• Token expiration enforced
• Admin endpoints require elevated privileges

2. Input Validation & SQL Injection

• All user inputs validated
• SQL queries use parameterized statements
• SQL safety validation enforced (see app/v2_sql_safety.py)
• Whitelist validation for tables and columns
• No raw SQL concatenation with user input
• Subqueries blocked
• UNION SELECT blocked

3. Data Protection & PII

• PII redaction enabled for logs
• OCR text redaction implemented
• Sensitive data not logged in plaintext
• Database credentials stored securely
• API keys not exposed in logs or error messages

4. Secret Management

• No hardcoded secrets in code
• Secrets stored in environment variables or secret manager
• Secret rotation mechanism implemented
• Old secrets properly expired
• Secrets not committed to version control

5. API Security

• HTTPS enforced (TLS 1.2+)
• CORS properly configured
• Rate limiting prevents abuse
• Request size limits enforced
• Error messages don't leak sensitive information

6. Database Security

• Database connections use TLS
• Database credentials rotated regularly
• Database access restricted by IP/network
• Database backups encrypted
• SQL injection protection in place

7. LLM API Security

• LLM API keys stored securely
• API keys rotated regularly
• CostGuard implemented to prevent budget overruns
• Usage quotas enforced
• Sensitive data not sent to LLM APIs unnecessarily

8. Logging & Monitoring

• Audit logging enabled
• Security events logged
• Failed authentication attempts logged
• PII redacted from logs
• Log retention policies enforced

9. Infrastructure Security

• Firewall rules configured
• SSH access restricted
• Unnecessary ports closed
• Security updates applied regularly
• Container images scanned for vulnerabilities

10. Code Security

• Dependencies regularly updated
• Known vulnerabilities patched
• Code reviewed for security issues
• Static analysis tools used
• No debug mode in production

Remediation Priority

Critical (Fix Immediately):

• SQL injection vulnerabilities
• Hardcoded secrets
• Missing authentication/authorization
• Unencrypted sensitive data

High (Fix Within 1 Week):

• Missing input validation
• Insecure API endpoints
• Missing rate limiting

Medium (Fix Within 1 Month):

• Missing audit logging
• Incomplete PII redaction
• Missing secret rotation

References

• OWASP Top 10
• CWE Top 25
• NIST Cybersecurity Framework