Local signature engine
Runs entirely on-device. No required cloud lookup, no streaming hashes to a vendor, no waiting on a cloud reputation API to make a call.
// Antivirus + Anti-AI Shield
Guardian Antivirus.
Built for the threats AI created.
Guardian is a Windows antivirus designed by GreyNOC for users who want real protection without telemetry, subscriptions, or platform bloat. Offline-first detection plus an Anti-AI Shield that targets prompt-injection, AI-generated phishing, and model-poisoning payloads.
Built offline
No telemetry
No subscription
Anti-AI shield
// Built offline. No telemetry. No subscriptions.
Practical protection without the bloat.
Most "AI-powered" antivirus products burn CPU, ship telemetry home, and ask you to subscribe for what should already be in the box. Guardian doesn't.
Quiet by default
No interruption pop-ups. No nag screens trying to upsell premium tiers. Status lives in the system tray; alerts only fire when something actually warrants one.
Lean process footprint
One service, no agent sprawl, no kernel modules competing for the same hooks. Designed to run cleanly alongside Windows Defender without ring-zero conflicts.
// Anti-AI shield
Targets local AI risk vectors.
Antivirus engines were built for a world before LLMs and image-gen models were on every machine. Guardian's Anti-AI Shield watches for the new attack patterns that traditional AV won't catch.
Prompt-injection detection
Flags files and clipboard payloads that contain hostile prompt-injection patterns aimed at local LLM clients and IDE-integrated AI assistants.
AI-generated phishing analysis
Heuristics that score messages and attachments against patterns characteristic of LLM-generated social engineering — without sending content to a cloud classifier.
Model-poisoning watch
Monitors local model directories for unexpected weight modifications, untrusted adapter loads, and known model-tampering signatures.
Why "Anti-AI" isn't anti-AI
Guardian doesn't try to block legitimate local AI use. The Anti-AI Shield is about defending the AI tools you've chosen to run from injection, poisoning, and AI-generated social engineering aimed at exploiting them.
One-time license. Lifetime updates.
Buy it, install it, own it. Signature and Anti-AI Shield updates ship for the life of the product. No subscription, no cloud account required.