AEGISITE - AI Antivirus for Your Browser

About

AEGISITE is the browser companion to the AEGISITE AI Antivirus — the first security
product built to protect you from AI-specific threats, on your machine and in your
browser.

WHAT THE EXTENSION DOES

Prompt injection detection
Catches malicious instructions hidden inside web content, documents, or messages you
paste into an AI — before your AI acts on them. Detects role-override attempts,
"ignore previous instructions" patterns, encoded payloads, and zero-width character
attacks.

Hidden & indirect injection protection
Scans content you paste or load into an AI for instructions you didn't write. The
difference between what YOU typed and what was injected is exactly what AEGISITE
is built to catch.

In-page data exfiltration neutralization
Identifies patterns designed to trick your AI into leaking sensitive information —
credentials, documents, personal data — out through its responses.

AI activity monitoring
Tracks what AI assistants in your browser are doing so you have full visibility,
not just when something goes wrong.

HOW IT WORKS

Everything runs on your device. Your messages are never sent to our servers. The
detection rules ship as a signed, automatically updated feed — so you stay protected
against new threats without waiting for an app update.

Free: real-time alerts when a threat is detected.
Pro: automatic blocking across all detection modules.

Works with: ChatGPT, Claude, Gemini, Microsoft Copilot, Perplexity, and more.

PART OF AEGISITE AI ANTIVIRUS

The extension is the browser sensor of the AEGISITE desktop app — which discovers
every AI process running on your machine, monitors their behavior, and quarantines
rogue or unexpected AI activity. Together they cover the full surface: what happens
in your browser and what runs on your machine.

Learn more: aegisite.workflo.hu

PRIVACY

Your message content never leaves your device. Optional anonymous telemetry (off by
default) records only which detection rule matched — never the content itself.