Security-by-Design for Advanced Nuclear

ARXx provides security-by-design solutions for advanced nuclear systems operating across land, maritime, and space environments.

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Land-Based Advanced Reactor

Maritime Nuclear Advanced Reactor Schematic

Maritime-Based Nuclear Power

Space Nuclear Advanced Reactor Schematic

Space-Based Nuclear Systems

Securing the Nuclear Fuel Cycle

Advanced nuclear systems depend on a complex global supply chain spanning mining, enrichment, fuel fabrication, reactor operations, and long-term fuel management. ARXx provides security-by-design solutions across each stage of the nuclear fuel cycle.

The Emerging Threat Landscape

Advanced nuclear systems will operate in more distributed, digitally connected, and contested environments than traditional nuclear power plants. Security-by-design must account for evolving physical, cyber, and geopolitical threats.

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Physical
Threats

Cyber
Threats

Systemic
Threats

"Plans are useless,

but planning is indispensable."

Dwight D. Eisenhower

ARXx Capabilities

ARXx identifies, measures, and closes security gaps across the nuclear fuel cycle and critical energy infrastructure. Our team combines operational security expertise with engineering and policy insight to ensure emerging technologies are secure by design.

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Red Cell
Analysis

Find the Gap

Red Cell Analysis applies adversary-focused thinking to identify how capable actors might exploit vulnerabilities across complex systems. ARXx examines physical, cyber, operational, and human dependencies to reveal weaknesses that conventional reviews often miss, particularly where small failures can be combined into larger effects.

This work helps clients see their systems as they may actually be tested in the real world. The result is a prioritized view of exposure that supports earlier intervention, better design choices, and more resilient operations.

The result is a clearer understanding of where a system is most exposed and which vulnerabilities matter most. By identifying critical gaps early, ARXx helps clients prioritize mitigation measures, strengthen resilience, and make better-informed decisions before vulnerabilities become operational liabilities.

Severe Hazard
Modeling

Measure the Gap

Severe Risk Modeling assesses the severity and cascading consequences of critical capability gaps through advanced analytics and collaboration with leading technical experts. ARXx analyzes how disruptions can escalate across interconnected systems, clarifying where vulnerabilities carry broader operational, economic, or strategic consequences.

By distinguishing severe risks from routine issues, this work gives clients a stronger basis for prioritization. The result is a clearer understanding of where resources, design changes, or protective measures will produce the greatest resilience return.

Emergency
Planning

Close the Gap

Emergency Planning translates analysis into action through realistic, scenario-based exercises that test systems under stress. ARXx designs exercises that evaluate decision-making, coordination, response pathways, and the practical effectiveness of mitigation measures before and after identified gaps are addressed.

This approach helps ensure that resilience measures are not merely documented, but demonstrated. By validating improvements under realistic conditions, ARXx helps clients strengthen preparedness and close the loop between identified vulnerabilities and operational readiness.

“Security must be built in,
not bolted on.”

Bruce Schneier

Partnering with ARXx

Government Partners

ARXx works with government agencies, laboratories, and emergency planners to identify critical capability gaps before they become operational failures. Through adversary-informed analysis, severe risk modeling, and scenario-based exercises, ARXx helps public sector partners prioritize investments, strengthen preparedness, and ensure that critical infrastructure can withstand evolving threats.

Developers & Operators

ARXx works with infrastructure developers, operators, and engineering teams to integrate security and resilience into system design from the outset. Through red team analysis, advanced risk modeling, and targeted exercises, ARXx helps organizations identify vulnerabilities early and implement solutions that are both operationally practical and resilient under real-world conditions.

Investors & Strategic Capital

ARXx supports investors seeking to understand the real risk landscape surrounding advanced infrastructure and emerging technologies. By combining technical expertise with structured risk analysis, ARXx helps investors identify hidden vulnerabilities, assess systemic exposure, and better understand where security, resilience, and operational design will determine long-term value.