🚀 Privacy Firewall V2 — Now a Chrome Extension

V1 was a Python server. V2 runs entirely in your browser. No setup, no server, no dependencies.

✨ What's New

🧩 Chrome Extension (Manifest V3)

Install in 30 seconds. Works immediately on ChatGPT, Claude, Gemini, and more.

🧠 In-Browser AI Detection

BERT NER model runs locally via ONNX/WASM — no Python, no API calls, 100% private.

🛡️ Two-Layer Protection

1. Instant Regex — Emails, credit cards, SSNs, API keys, JWTs
2. AI Layer — Names, organizations, locations that regex misses

⚙️ Fully Configurable

• Enable/disable specific PII types
• Block (modal) vs Warn (banner) per rule
• Adjust AI confidence threshold
• Manage protected sites

🎯 Quick Start

1. Download privacyfirewall-extension.zip below
2. Unzip
3. Go to chrome://extensions → Enable Developer Mode → Load Unpacked
4. Visit ChatGPT and paste: Contact john.doe@company.com

📦 What's Included

• Pre-built Chrome extension (no build step required)
• BERT NER model for local entity detection
• Shadow DOM UI (no CSS conflicts with AI sites)

🔐 Privacy Guarantee

• ✅ Zero network requests
• ✅ No telemetry or analytics
• ✅ Everything runs in your browser
• ✅ Open source (MIT)

🙏 Support

If this tool helps protect your data, please ⭐ the repo — it helps others discover it.

Found a bug? Open an issue