Physics Defender
Cyber-Physical AI Security
NEURAL CORE · MONITORED
RUNTIME GUARD · ACTIVE
ACTUATOR LINK · CONSTRAINED
Cyber-Physical AI Safety & Security

Before AI Can Move the World, It Must Be Secured.

Physics Defender helps robotics teams secure, test and evidence the safety boundary between AI decisions and physical action.

Red team, constrain, monitor and document Physical AI systems across humanoid robots, drones, ROS2 platforms and autonomous machines.

Built for robotics teams, AI labs, industrial operators and safety-critical environments.
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[ 00 ] The Pathway

Security must understand the full path from prompt to actuator.

AI decisions are becoming physical actions. Physics Defender maps and protects every stage between an AI's reasoning and a machine's motion — overlaying risk nodes with a continuous runtime security layer.

AI → ACTUATOR PATHWAY RUNTIME GUARD · ACTIVE
PHYSICS DEFENDER RUNTIME SECURITY LAYER
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PHYSICAL WORLD · VERIFIED SAFE STATE
Standards mapping & evidence support · no certification claims
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[ 01 ] The Problem

AI security changes when software starts moving machines.

LLMs and AI agents are no longer limited to generating text. They are beginning to plan, call tools, interpret sensors, control workflows and influence robotic systems. In physical environments, a model failure, prompt injection or unsafe plan can become a machine action.

Physics Defender exists for the new risk surface where artificial intelligence, robotics, safety engineering and cybersecurity converge.

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[ 02 ] Category Definition

Cyber-Physical AI Security

AI Security + Robotics Safety + OT Security + Runtime Governance

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CONVERGENCE
Physics Defender

Physics Defender helps teams understand and control the full pathway from AI reasoning to physical actuation.

[ 03 ] Risk Surface

The Physical AI risk surface is bigger than the model.

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[ 04 ] Methodology

From AI red teaming to cyber-physical assurance.

A structured methodology for identifying, testing, constraining and evidencing Physical AI risks.

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[ 05 ] Architecture

Security architecture for the AI-to-actuator pathway.

Physics Defender maps and protects the complete stack where AI decisions become machine actions.

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Cross-cutting modules
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[ 06 ] Robotics Safety Case

From AI Risk to Robotics Safety Case.

Physics Defender helps teams translate cyber-physical AI risks into hazard analyses, safety requirements, mitigations and evidence packages for future certification and regulatory review.

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Claim

The robot operates within defined safety boundaries.

Argument

Hazards have been identified, mitigations implemented and runtime controls verified.

Evidence

Simulation tests, red team results, logs, requirements traceability, policy checks and monitoring records.

[ 07 ] Runtime Security Layer

Runtime boundaries for Physical AI systems.

When AI systems can act, safety must be enforced continuously. Physics Defender helps teams define and test the operational boundaries that prevent AI decisions from becoming unsafe physical behavior.

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BLOCKED ZONE
WARNING ZONE
ALLOWED ZONE
Robot
Execution
HUMAN OVERRIDE
[ 08 ] Standards & Framework Alignment

Built for teams that need evidence, not slogans.

Physics Defender supports standards mapping, governance evidence and certification-readiness workflows across AI, robotics, OT and functional safety contexts.

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Physics Defender does not replace certification bodies. It helps teams build structured risk evidence, safety-case documentation and technical traceability for future audits, regulatory review and certification-readiness.

[ 09 ] Use Cases

Built for the systems where AI meets the physical world.

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[ 10 ] Differentiation

Not just AI security. Not just robotics safety.

Traditional AI Security
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Traditional Robotics Safety
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Physics Defender
UNIFIED
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[ 11 ] Platform Modules

A platform for cyber-physical AI assurance.

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[ 12 ] Research

Research for the age of Physical AI.

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Read Brief →

Deploy Physical AI with security boundaries.

Start with a cyber-physical AI risk assessment for your humanoid system, drone stack, ROS2 platform or autonomous machine.

No hype. No false guarantees. Just structured risk analysis, runtime controls and evidence for safer Physical AI deployment.

Platform

Cyber-Physical AI Assurance Platform

A structured platform for mapping, testing, constraining and evidencing the risk surface of Physical AI systems.

Modules
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Workflow
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Architecture

The AI-to-actuator stack.

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Evidence Outputs

What you walk away with.

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Map your Physical AI risk surface.

Start with a cyber-physical AI risk assessment for your robotics platform, drone stack, ROS2 system or autonomous machine.

Threat Model

Threat Modeling for Physical AI

Understand how adversarial instructions, compromised inputs and unsafe plans can propagate into physical action.

AI-to-Actuator Attack Path
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Risk categories across the path.

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Threat Catalogue
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Map your Physical AI risk surface.

Start with a cyber-physical AI risk assessment for your robotics platform, drone stack, ROS2 system or autonomous machine.

Robotics Safety Case

Safety Case Support for AI-Controlled Robotics

Translate AI and robotics risks into claims, arguments and evidence that engineering, legal, policy and safety teams can review.

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Claim

The autonomous robot operates within defined safety boundaries in its intended environment.

Argument

Hazards have been identified, risks assessed, mitigations implemented and runtime constraints verified.

Evidence

Hazard analysis, FMEA, simulation results, runtime logs, red team findings, requirements traceability and monitoring records.

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Map your Physical AI risk surface.

Start with a cyber-physical AI risk assessment for your robotics platform, drone stack, ROS2 system or autonomous machine.

ROS2 Security

ROS2 Security Review for Robotics Platforms

Map and review the communication graph, middleware exposure and security posture of ROS2-based robotic systems.

Communication Graph

Nodes publish and subscribe across topics and services over DDS. Each edge is a pathway that may need authentication, access control and integrity verification.

/cmd_vel /scan · EXPOSED /tf /joint_cmd · CRITICAL
sensor planner tf actuator
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Assessment Deliverables
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Map your Physical AI risk surface.

Start with a cyber-physical AI risk assessment for your robotics platform, drone stack, ROS2 system or autonomous machine.

Industries

Physical AI is becoming infrastructure.

Physics Defender supports teams building and deploying AI systems that sense, decide and act in real environments.

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Risk context

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What can go wrong

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How we help

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Example evidence

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Map your Physical AI risk surface.

Start with a cyber-physical AI risk assessment for your robotics platform, drone stack, ROS2 system or autonomous machine.

Research

Research for Cyber-Physical AI Security

Technical briefs, threat models and safety engineering notes for the age of AI-controlled machines.

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Read Brief →
About

Securing the boundary between intelligence and motion.

Physics Defender was created for the next phase of AI: systems that do not just answer, but act.

Mission

To secure and evidence the safety boundary between AI decisions and physical action — so robotics teams can deploy Physical AI with structured risk analysis, runtime controls and reviewable evidence.

Why now

AI agents are beginning to plan, call tools and control machines. The risk surface where intelligence becomes motion is new, growing and under-secured. It needs dedicated engineering.

Principles
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Technical philosophy

Security must understand the full path from prompt to actuator. Model evaluation alone is not enough — sensors, middleware, controllers, actuators and operational context all carry risk and all require evidence.

Safety & security culture

No hype, no false guarantees. We measure success in traceable hazards, verified constraints and reviewable evidence — not slogans. Human oversight remains critical at every layer.

Let's talk about your system.

We focus on serious technical conversations with robotics, AI, security, safety and product teams.

Contact

Start with a Physical AI Risk Assessment.

Tell us about your robotics platform, AI agent, drone system, ROS2 stack or autonomous machine.

Trust note

We focus on serious technical conversations with robotics, AI, security, safety and product teams.

founders@physicsdefender.com
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Key takeaways
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