As artificial intelligence (AI) systems become increasingly critical to national security and other high-stakes domains, the risk of model theft, manipulation, and misuse by sophisticated adversaries grows. In this report, the authors present a vertically integrated security strategy for secure inference data centers (SIDCs): purpose-built, Security Level 5 facilities designed to protect trained AI models against the most-advanced nation-state adversaries.
The authors’ proposed SIDC architecture employs rigorous system partitioning, unidirectional data diodes, and formally verified cross-realm protocols to ensure the confidentiality and integrity of model weights, algorithms, and inference data.
The report details a concept-to-circuit methodology, emphasizing minimal, purpose-built features and the use of formal methods for high-assurance components. While operational constraints—such as limited connectivity, fixed software, and restricted physical access—limit general applicability, SIDCs are recommended for national security, emergency response, and pilot deployments.
SIDCs can be implemented today using proven technologies. The authors recommend that stakeholders initiate detailed design and prototyping to accelerate deployment.
This publication is part of the RAND research report series. Research reports present research findings and objective analysis that address the challenges facing the public and private sectors. All RAND research reports undergo rigorous peer review to ensure high standards for research quality and objectivity.
This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit www.rand.org/pubs/permissions.
RAND is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND’s publications do not necessarily reflect the opinions of its research clients and sponsors.

