Defence Security

Zero Trust Implementation

Centralised identity and access management for a defence contractor using Entra ID, device lockdown, SSO, and Conditional Access policies—implementing Zero Trust principles across all platforms and locations.

Zero Trust Architecture

Full SSO All Applications

100% Device Compliance

CSM Aligned

The Challenge

Meeting Defence Supply Chain Requirements

This defence contractor was working on increasingly sensitive projects and needed to demonstrate robust security controls to their prime contractor clients. The existing IT setup—built incrementally over years—had multiple identity systems, inconsistent access controls, and no central visibility.

Their clients were asking pointed questions about identity management, device security, and access controls that they couldn't confidently answer. They needed to implement Zero Trust principles to meet the expectations of the defence supply chain.

Key challenges:

Multiple identity silos—local AD, various cloud services with separate logins
No centralised authentication or single sign-on
Devices not managed—mix of corporate and personal machines
No Conditional Access—same access regardless of location or device
Privileged access not controlled or audited
Prime contractors requiring evidence of security controls

Our Solution

Zero Trust Architecture with Entra ID

We implemented a comprehensive Zero Trust architecture using Microsoft Entra ID (Azure AD) as the central identity provider, with Conditional Access policies enforcing security requirements at every access decision.

Verify Explicitly

Every access request authenticated and authorised based on all available data points—user identity, device health, location, and resource sensitivity.

Least Privilege Access

Just-in-time and just-enough access with risk-based adaptive policies. Privileged access time-limited and audited.

Assume Breach

Minimise blast radius with segmentation. End-to-end encryption. Continuous monitoring and threat detection.

Implementation included:

Entra ID as central identity provider with hybrid sync from on-prem AD
SSO integration for all SaaS applications (30+ apps)
Device enrolment in Intune with compliance policies
Conditional Access policies requiring compliant devices, MFA, and approved locations
Privileged Identity Management for admin roles with just-in-time activation
Azure AD Identity Protection for risk-based access decisions
Continuous access evaluation for real-time policy enforcement

Microsoft Entra ID Conditional Access Microsoft Intune Privileged Identity Management Identity Protection Defender for Identity Azure AD App Proxy

The Results

Complete Identity Transformation

The organisation now has full visibility and control over identity and access across their entire environment. Every access decision is evaluated against policy, and they can demonstrate their security posture to clients with confidence.

Single Sign-On

All 30+ applications

100%

Devices compliant

Zero Standing

Privileged access

Audit Ready

Full access logs

"Our prime contractors are now satisfied with our security posture. We can show them exactly how access is controlled, audited, and restricted. It's opened doors to projects we couldn't have pursued before."

— Security Manager, Defence Contractor

The implementation aligns with the Cyber Security Model (CSM) requirements and positions the organisation well for supply chain security assessments. They continue to mature their security posture with ongoing threat monitoring and policy refinement.

Need Zero Trust for Your Organisation?

Whether for compliance, security, or operational efficiency—we'll design the right approach for your environment.

Discuss Zero Trust Defence IT Services