Zero Trust Architecture — Never Trust, Always Verify

Zero trust: no device or user is automatically trustworthy. Every request is verified. Perimeter security is dead.

Principles¶

1. Never trust, always verify
2. Least privilege access
3. Assume breach
4. Verify explicitly — identity, device, location
5. Network microsegmentation

Implementation¶

1. SSO + MFA for all users
2. Device compliance (Intune, Jamf)
3. Network microsegmentation
4. mTLS for service-to-service
5. Central logging and SIEM
6. Regular audit and pentest

Kubernetes Network Policy¶

apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: deny-all spec: podSelector: {} policyTypes: [Ingress, Egress]

Key Takeaway¶

Zero trust is not a product, it’s a principle. Start with identity (SSO+MFA), then network (segmentation), then data (encryption).