Security & Compliance Guide¶

Operating inside the U.S. healthcare sector demands absolute guarantees around data residency, integrity, and privacy. This guide outlines the multi-layered security controls, threat mitigation strategies, and HIPAA compliance policies that protect Golden Age Hub data at rest, in transit, and during edge execution.

Security Architecture¶

Multi-Layer Security Model¶

1. Infrastructure Security¶

U.S.-only hosting and data residency
Zero-Trust network segmentation
Container security with Trivy scanning
Secure supply chain with dependency auditing

2. Application Security¶

AES-256-GCM encryption at rest
TLS 1.3 encryption in transit
Role-based access control (RBAC)
Multi-factor authentication (MFA)

3. Data Security¶

HIPAA-compliant data handling
Audit trail for all data access
Secure data disposal procedures
Patient data pattern validation

4. Development Security¶

Automated security scanning in CI/CD
CodeQL static analysis
Dependency vulnerability scanning
Secret detection and prevention

HIPAA Compliance¶

Technical Safeguards¶

Access Control¶

# Example: Role-based access control
@router.get("/patients/{patient_id}")
async def get_patient(
    patient_id: str,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db)
):
    # Verify user has appropriate permissions
    if not has_patient_access(current_user, patient_id):
        raise HTTPException(status_code=403, detail="Access denied")

Audit Logging¶

# Example: Audit trail implementation
import logging

audit_logger = logging.getLogger("audit")

def log_data_access(user_id: str, patient_id: str, action: str):
    audit_logger.info(
        f"User {user_id} {action} patient {patient_id}",
        extra={
            "user_id": user_id,
            "patient_id": patient_id,
            "action": action,
            "timestamp": datetime.utcnow().isoformat()
        }
    )

Data Encryption¶

# Example: Field-level encryption
from cryptography.fernet import Fernet

class EncryptedField:
    def __init__(self, key: bytes):
        self.cipher = Fernet(key)

    def encrypt(self, data: str) -> str:
        return self.cipher.encrypt(data.encode()).decode()

    def decrypt(self, encrypted_data: str) -> str:
        return self.cipher.decrypt(encrypted_data.encode()).decode()

Administrative Safeguards¶

Security Officer Responsibilities¶

Conduct regular security assessments
Review audit logs for suspicious activity
Maintain security policies and procedures
Coordinate incident response activities

Workforce Training¶

Annual HIPAA compliance training
Security awareness training
Incident response procedures
Data handling best practices

Incident Response¶

Detection: Monitor security alerts and audit logs
Assessment: Evaluate impact and scope
Containment: Isolate affected systems
Notification: Report to appropriate authorities
Recovery: Restore secure operations
Post-Mortem: Document lessons learned

Security Scanning¶

Automated Scanning¶

Daily Security Scans¶

# Run comprehensive security validation
uv run python validate_hipaa_compliance.py --root-dir backend

# Check for known vulnerabilities
uv run safety check

# Run security linter
uv run bandit -r backend/

# Audit dependencies
uv run pip-audit

Container Security¶

# Scan Docker images for vulnerabilities
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock \
  aquasec/trivy:latest image goldenage-backend:latest

Manual Security Reviews¶

Code Review Checklist¶

No hardcoded credentials or secrets
Proper input validation and sanitization
Appropriate error handling (no information disclosure)
Secure session management
Principle of least privilege
Audit logging for sensitive operations

Security Testing¶

# Example: Security test case
@pytest.mark.security
async def test_patient_data_access_control():
    """Test that unauthorized users cannot access patient data."""
    # Test with unauthorized user
    response = await client.get("/patients/123")
    assert response.status_code == 403

    # Test with authorized user
    response = await authorized_client.get("/patients/123")
    assert response.status_code == 200

Compliance Validation¶

HIPAA Compliance Script¶

The validate_hipaa_compliance.py script provides automated compliance validation:

# Run full compliance validation
uv run python validate_hipaa_compliance.py --root-dir backend

# Generate compliance report
uv run python validate_hipaa_compliance.py \
  --root-dir backend \
  --output compliance-report.json

# Fail on issues (for CI/CD)
uv run python validate_hipaa_compliance.py \
  --root-dir backend \
  --fail-on-issues

Compliance Metrics¶

The compliance script generates a score (0-100) based on: - Patient data handling practices - Security implementation - Audit trail completeness - Access control mechanisms - Encryption usage

Security Best Practices¶

Development Practices¶

Never commit secrets or credentials

# Bad: Hardcoded password
password = "secret123"

# Good: Environment variable
password = os.getenv("DB_PASSWORD")

Use parameterized queries

# Bad: SQL injection vulnerable
query = f"SELECT * FROM patients WHERE id = {patient_id}"

# Good: Parameterized query
query = "SELECT * FROM patients WHERE id = :patient_id"
result = await conn.execute(text(query), {"patient_id": patient_id})

Validate all inputs

from pydantic import BaseModel, validator

class PatientData(BaseModel):
    name: str
    ssn: str  # Should be encrypted

    @validator('ssn')
    def validate_ssn(cls, v):
        if not re.match(r'^\d{3}-\d{2}-\d{4}$', v):
            raise ValueError('Invalid SSN format')
        return v

Operational Practices¶

Regular Security Updates
Update dependencies weekly
Apply security patches promptly
Monitor vulnerability databases
Access Management
Review user permissions monthly
Disable inactive accounts
Enforce strong password policies
Backup Security
Encrypt backup data
Test restore procedures
Store backups securely

Incident Response¶

Security Incident Types¶

Data Breach: Unauthorized access to patient data
System Compromise: Server or application breach
Insider Threat: Malicious or accidental internal exposure
Denial of Service: Service availability disruption

Response Procedures¶

Immediate Response (0-1 hour)¶

Activate incident response team
Isolate affected systems
Preserve evidence
Assess initial impact

Investigation (1-24 hours)¶

Analyze logs and audit trails
Determine scope of breach
Identify affected data
Document findings

Notification (24-72 hours)¶

Notify affected individuals
Report to regulatory authorities
Communicate with stakeholders
Manage public relations

Recovery (3-7 days)¶

Restore secure operations
Implement security improvements
Conduct post-incident review
Update security procedures

Security Tools and Resources¶

Built-in Tools¶

validate_hipaa_compliance.py: HIPAA compliance validation
Security scanning: Safety, Bandit, Semgrep
Container scanning: Trivy vulnerability scanner
Code analysis: GitHub CodeQL

External Resources¶

Security Contacts¶

Security Officer: security@goldenagehub.com
Incident Response: incident@goldenagehub.com
Compliance Questions: compliance@goldenagehub.com

Compliance Checklist¶

Daily¶

Review security scan results
Check audit logs for anomalies
Verify system backups

Weekly¶

Update dependencies
Review user access logs
Test security controls

Monthly¶

Conduct security assessment
Review user permissions
Update security policies

Quarterly¶

Perform penetration testing
Conduct compliance audit
Update incident response plan

Annually¶

Complete HIPAA training
Update risk assessment
Review security architecture

Last Updated: 2024-11-23 Version: 1.0 Maintainers: Golden Age Hub Security Team