Zero Trust Security

# Zero Trust Security

Never trust, always verify. Zero trust is essential for modern distributed systems.

## Core Principles

**Verify Explicitly**

Always authenticate and authorize. Every request, every time.

**Least Privilege Access**

Minimal permissions. Just enough, just in time.

**Assume Breach**

Minimize blast radius. Segment networks. Encrypt everything.

## Implementation

**Identity-Based Security**

Not network-based. Every service has an identity.

**Mutual TLS**

Both client and server authenticate. Service mesh makes this easy.

**Network Segmentation**

Microsegmentation with network policies.

## Zero Trust in Practice

**Authentication**

- Service accounts for services

- MFA for humans

- Short-lived credentials

**Authorization**

- Policy-based access control

- Regular access reviews

- Automated provisioning/deprovisioning

**Monitoring**

- Log everything

- Detect anomalies

- Automated response

Trust nothing. Verify everything.