The AI Firewall that never leaves your device.
While others route your sensitive data through their cloud to scan it, Patronus works entirely on your device. Real-time. Offline-capable. Zero cloud dependency.
Cross-Provider Protection
- OpenAI
- Claude
- Gemini
- Copilot
- Mistral
- Ollama
- Perplexity
- Meta AI
- + every other provider
Realtime
Local analysis, low latency
100%
On-device, no cloud routing
GDPR
Compliant by architecture
Any AI
Tool, model or provider
The Hidden Risks of AI
Most AI threats remain invisible to conventional security tools
Visible risksHallucinations
Incorrect or misleading outputs from AI systems
Public AI Usage
Use of ChatGPT and similar tools without restrictions
Shadow AI
Untracked and unauthorized AI use across the organization
Uncontrolled Data Flow
Sensitive data moving between tools without any visibility
Lack of Visibility
No insight into how AI is actually being used internally
Prompt Injection
Manipulation of AI through hidden malicious instructions
Agent Misuse
AI agents executing unintended or harmful actions
No Real-Time Protection
Risks detected only after damage has already been done
Patronus Protect Controls and secures AI where risks are invisible
AI Security Stack
Patronus operates at the application layer, the only AI security solution that covers every single interaction across your organization.
Patronus
Every app, every model, on-device
Cloud API Gateways
Cloud-routed traffic only
Browser Extensions
Only AI accessed via that browser
App Plugins
One specific AI app only
Why Patronus
Patronus vs. Cloud AI Security
Most AI security platforms add another cloud hop between you and safety. Patronus eliminates that risk entirely.
| Capability | Patronus | Cloud AI Security | Why it matters |
|---|---|---|---|
| Data leaves device | Never | Always | Prevents a second uncontrolled data exposure |
| Works offline / air-gapped | Yes | No | Critical for regulated & secure environments |
| Covers all AI tools | Yes, on device and out of device | cloud routed | Eliminates Shadow AI blind spots entirely |
| GDPR by design | Yes, architectural | Requires configuration | Audit-ready from day one, no setup needed |
| Cloud dependency | None | Required | No vendor downtime, no single point of failure |
The Problem with Cloud AI Security
Your security tool shouldn't create another data risk.
Most AI security platforms route your prompts through their own cloud to analyze them. That means your sensitive data is sent to yet another external server, before any protection even kicks in.
Cloud-routed analysis
Your prompts travel through a vendor's servers for scanning. Who's securing the security tool itself?
Single-tool coverage
Most solutions protect only one application. Employees using other AI tools remain completely unmonitored.
Requires connectivity
Cloud-dependent security fails offline, in air-gapped environments, or during vendor downtime.
Patronus never sends your data anywhere. Everything happens on your device, in real time, under your control.
Our pillars of AI security
Observability
Any protection starts with observability.
We see what you don't.
Zero-Trust
AI operates across apps, tools, and hidden layers.
We trust no interaction by default.
Protection
Real security goes beyond detection.
Stopping threats requires real-time enforcement.
We keep the human-in-the-loop.
Privacy-by-Design
Built offline-first to protect your data.
We keep your data on your device*.
*Only minimal, compliance-ready metadata ever leaves your device on your demand.
How Patronus Works
Local-first security in three steps.
Intercept
A lightweight endpoint component operating in the network path intercepts and analyzes application-layer traffic to identify and control AI interactions across apps, browsers, and providers.
Analyze Locally
The on-device inspection engine checks every prompt and response against your configured policies. No data leaves the machine during this process.
Enforce Policy
Threats are blocked, PII is automatically redacted, suspicious activity is flagged. Every event is logged locally, providing a forensic audit trail for compliance.
Systemwide Coverage
One agent covers every AI tool your team uses.
Patronus operates at the application layer, not inside a browser extension or a single app. It intercepts every AI request the device makes, regardless of tool, provider, or application. Shadow AI has nowhere to hide.
AI Traffic Intercepted by Patronus
Local Processing Status
On-device inference
All AI traffic analyzed on this machine
Offline mode enabled
Fully functional without internet
GDPR compliance
Enforced by architecture, not configuration
Cloud routing
Disabled, data never leaves the device
Local-First Architecture
Your data never leaves your device. Period.
Unlike cloud-based security vendors who analyze your AI traffic on their own servers, Patronus runs the entire inspection pipeline locally. Full GDPR compliance by design, zero additional data exposure, and complete protection in air-gapped environments.
Real-Time Protection
Every threat caught before it reaches the model.
Patronus inspects every prompt and response in milliseconds on the device itself. Prompt injections, jailbreak attempts, PII leaks, and policy violations are caught and stopped before they reach the model, with zero impact on workflow speed.
Active Guardrails
Policy Configuration
Block all PII in prompts
Applies to all apps
No code generation via ChatGPT
ChatGPT only
Flag financial data mentions
All apps
Allow internal LLM traffic
Internal tools
Require approval for AI agents
AI Agents
Policy Enforcement
You set the rules. Patronus enforces them everywhere.
Define company-wide AI usage policies that apply across every tool your team uses. Block specific data types, restrict behaviors, control what AI agents can access, and maintain a full audit trail, all enforced locally.
Who Patronus Protects
Built for teams that take AI security seriously.
Enterprise AI Rollouts
Monitor and control Copilot, ChatGPT Enterprise, and custom LLMs company-wide without per-tool configuration.
High-Compliance Industries
Finance, legal, and healthcare teams proving GDPR & CCPA compliance for every single AI interaction.
AI Agent Environments
Autonomous agents accessing files and APIs: Patronus defines exactly what actions they are permitted to take.
Air-Gapped Deployments
Defence, critical infrastructure, and secure facilities where cloud connectivity is simply not an option.
Data Sovereignty
Your infrastructure. Your rules. Your data.
Patronus runs entirely on the endpoint. No prompts, no documents, no metadata ever leave your perimeter. GDPR and CCPA compliance is a consequence of how we're built, not a setting.
Audit-Ready by Default
Every AI interaction logged with forensic-grade detail. Generate GDPR, CCPA, and SOC 2 compliance reports on demand.
SIEM Integration
Stream AI security events to Splunk, Elastic, or Datadog. Native connectors embed Patronus in your existing SOC.