Understanding Zero Trust Architecture in 2025

What is Zero Trust?

Zero Trust is a security framework that requires all users—whether inside or outside the organisation's network—to be authenticated, authorised, and continuously validated before being granted access to applications and data.

Core Principles

Never trust, always verify — Every access request must be authenticated regardless of where it originates.

Least privilege access — Users and systems receive only the minimum access they need to perform their tasks.

Assume breach — Design systems assuming a breach has already occurred to limit blast radius.

How to Get Started

Map your attack surface — Identify your most sensitive data and systems
Verify all users and devices — Implement MFA and device health checks
Micro-segment your network — Prevent lateral movement with fine-grained network controls
Monitor continuously — Log all traffic and set up anomaly detection

Zero Trust is a journey, not a destination. Start with your most critical assets and expand from there.

What is Zero Trust?

Core Principles

Never trust, always verify — Every access request must be authenticated regardless of where it originates.

Least privilege access — Users and systems receive only the minimum access they need to perform their tasks.

Assume breach — Design systems assuming a breach has already occurred to limit blast radius.

How to Get Started

Map your attack surface — Identify your most sensitive data and systems
Verify all users and devices — Implement MFA and device health checks
Micro-segment your network — Prevent lateral movement with fine-grained network controls
Monitor continuously — Log all traffic and set up anomaly detection

Zero Trust is a journey, not a destination. Start with your most critical assets and expand from there.