AEGISITE - AI Guardian for Your Browser

AEGISITE is the browser companion to AEGISITE - AI Guardian, 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 detection 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, and keeps a 30-day history of detections on your device, shown in the popup. HOW IT WORKS The detection runs on your device. The detection rules ship as a signed feed. New detection rules reach you without 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 GUARDIAN The extension is the browser sensor of the AEGISITE - AI Guardian desktop app. Together they cover both sides: what happens in your browser and what runs on your machine. Learn more: aegisite.workflo.hu PRIVACY Your message content is analyzed on your device. Optional anonymous telemetry (off by default) records only which detection rule matched, not the content. When the AEGISITE - AI Guardian desktop app is installed, the extension reports a caught threat to it locally on your machine.