Next-Generation National Security Applications
Using XD-CORE™ Cross Domain Hybrid Application (CDHA) Platform
The problem
Cross-domain working is a key challenge area for the National Cyber Security Centre (NCSC)
As national security threats evolve, data silos and fragmented security domains create operational inefficiencies and elevate security and compliance risks. These challenges are further compounded by two critical issues:
• Data Aggregation Risks:
Unprotected sensitive data at the OFFICIAL classification is a prime target for Hostile State Actors.
• Restricted Visibility & Access:
Isolated SECRET systems, limit operational agility and cross-domain collaboration.
To mitigate these risks, appropriate security measures must be implemented, enabling secure interoperability.
The Solution: XD-CORE™
XD-CORE™ is Acubed IT’s modular platform for building and operating Cross Domain Hybrid Applications (CDHA)
With increasing regulatory pressure from NIS2, CAF, and the Cyber Resilience Bill, organisations must adopt solutions that go beyond basic data transfer – they need operational efficiency, cryptographic security and seamless cross-domain application functionality.
Designed to address these challenges, XD-CORE™ is a secure platform built on the CDHA Framework, developed in collaboration with UK Cyber Authority. It protects data across all classification levels, mitigates data aggregation risks at OFFICIAL, and enables authorised, application-mediated access to data stored at higher classifications (e.g., SECRET) from OFFICIAL-side user devices.
XD-CORE™ delivers application-level cross-domain capability, not just data exchange.
With quantum computing set to disrupt traditional encryption, XD-CORE™ integrates:
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Quantum-resistant cryptographic algorithms
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Advanced encryption techniques (e.g., ABE)
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Long term data protection strategies
Ensuring your systems remain secure today and in the future.
XD-CORE™ is more than a traditional Cross-Domain Solution (CDS) - it represents a next-generation approach to secure applications. It bridges the gap between security and usability, enabling data-driven decision-making while safeguarding sensitive information against evolving threats.
Acubed IT is working with an HMG SECRET Platform team to deliver Next-Generation National Security Applications, enabling secure interoperability across OFFICIAL and SECRET networks.
HMG's SECRET Hosting
A Flexible, Tier 2 (SECRET) Hosting Service
HMG's SECRET Hosting is a Tier 2 Community Cloud designed specifically for the UK Government and its trusted partners, providing a highly secure and resilient infrastructure. Hosted across two data centres, HMG's SECRET Hosting leverages Broadcom V-Cloud Foundations technology to deliver a fully virtualised infrastructure and networking within an ‘air-gapped’ environment. With an in-house project delivery and engineering team, as well as dedicated service management and help desk functions, HMG's SECRET Hosting ensures seamless support and operational excellence. Security is reinforced through an in-house Tier 2 Security Operations Centre (SOC), offering continuous monitoring and protection:
Example Topology using XD-CORE™ CDHA Platform and HMG's SECRET Hosting
The CDHA and HMG's SECRET Hosting application will have the best of both worlds. Data will continue to be collected at OFFICIAL while enabling SECRET users to access the application from their networks. This approach allows many departments to mitigate the risks associated with data collection at OFFICIAL while also leveraging the investment made in the Rosa ecosystem.
