Defense Contractor Deploys Secure Endpoints Across 85,000 Personnel

Teceze architected and deployed a comprehensive tiered security endpoint infrastructure enabling an aerospace and defense contractor to achieve IL6 compliance across 85,000+ personnel handling classified information, maintain 100% security mandate compliance, eliminate security breaches, and enable secure cross-domain collaboration.

About the Client

A major aerospace and defense contractor employing 85,000+ personnel with appropriate security clearances, handling classified and controlled information across multiple facilities. The organization operates advanced engineering centers and secure production facilities requiring multi-level security architecture.

At a glance

Industry
Aerospace & Defense
Headquarters
Defense Technology Hub
Products & services
Secured-core PC architecture, Credential Guard, application control policies, IL5/IL6 compliance, cross-domain secure transfer
Challenge
Multi-classification environments (public to secret), stringent government security mandates, legacy systems incompatible with modern OS, cross-domain collaboration on classified information

Success highlights

  • 85,000+ secure endpoints deployed with hardware-based security
  • 100% IL6 compliance achievement across all facilities
  • Zero security breaches post-deployment
  • 24/7 secure operations without workflow disruption

The challenge

Corporate meeting

Multi-Classification Security Architecture for Defense Operations

The constraint: IL5/IL6 compliance mandates, legacy OS incompatibility, cross-domain classified collaboration, zero-disruption 24/7 operations

The organization required a comprehensive security solution supporting multiple classification levels — public, controlled, secret, and top-secret — while maintaining operational efficiency and enabling cross-domain collaboration on classified information. That meant supporting multi-classification environments across distributed facilities simultaneously, while meeting stringent government security mandates including IL5/IL6 compliance requirements that left little room for architectural compromise. Legacy systems built for an earlier security era were unable to run modern operating systems while still maintaining the classification levels they were certified for, creating a direct conflict between modernization and compliance.

Enabling secure cross-domain collaboration on classified and controlled unclassified information added further complexity, since data moving between classification boundaries had to be verifiably secure at every step. And because this was a defense environment operating around the clock, none of it could come at the cost of disruption — the organization needed to achieve 100% compliance without interrupting 24/7 defense operations even briefly.

Our approach

Tiered Security Architecture with Hardware Attestation

Teceze architected a comprehensive multi-tier security model with hardware-based attestation, credential protection, and strict application controls ensuring compliance across all classification levels. A hardware-based root of trust was established through Secured-core PCs with TPM 2.0 deployed to every endpoint, with firmware attestation and measured boot verifying system integrity from the moment of power-on rather than trusting the OS layer alone.

From challenge to transformation, the solution included:

Secured-core PC Architecture

Hardware-based root of trust through Secured-core PCs with TPM 2.0 for all endpoints, with firmware attestation and measured boot ensuring system integrity from power-on.

Credential Guard and Isolation

Credential Guard protecting credentials in Hyper-V-isolated containers, preventing theft even if system compromise occurs, with Isolated User Mode for sensitive authentication processes.

Application Control and Policy Enforcement

Windows Defender Application Control policies restricting execution to approved applications in classified environments, with attestation-based whitelisting for high-security classifications.

Cross-Domain Secure Transfer

Controlled data flow workflows for secure transfer of unclassified information between domains, with one-way data diodes and guarded transfer protocols for top-secret environments.

Governance and Reporting Cadence

Operational transparency and stakeholder alignment are critical to program success. A layered governance model keeps program health and costs visible:

Cadence Forum Focus
Daily Security Operations Center Review Endpoint health, threat detection, compliance anomalies, incident response
Weekly Classification Compliance Review Multi-level compliance status, audit findings, remediation tracking
Monthly Security Architecture Review Vulnerability management, patch compliance, emerging threat assessment
Quarterly Government Compliance Review IL5/IL6 compliance status, government inspection readiness, security certification renewal
The Results

Proven results at scale

85K+Secure Endpoints
100%IL6 Compliance
0Security Breaches
85,000+Secure endpoints deployed across all facilities with hardware-based security
100%IL6 compliance achievement across all classifications, public through top-secret
100%Government security mandates met and maintained across all facilities

What the client says

“Teceze built a security architecture that finally lets us operate modern systems in classified environments without compromise. IL6 compliance across 85,000 endpoints was a massive undertaking. Zero breaches since deployment proves this was done right.”

— Chief Information Security Officer, Aerospace & Defense Contractor

Delivery partnership

How Teceze Executes on This Engagement

Teceze delivered comprehensive security infrastructure: threat assessment, security architecture design, Secured-core PC deployment across 85,000 endpoints, credential protection implementation, application control configuration, cross-domain security setup, and ongoing compliance monitoring.

Looking ahead

Advanced Security and Post-Quantum Cryptography

With the current security architecture validated and operational, the contractor is positioned to adopt emerging security technologies including post-quantum cryptography and advanced threat hunting capabilities.

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