PII Protection for AI Chatbots
The PrivaiShield browser extension automatically intercepts and redacts sensitive data before it reaches ChatGPT, Claude, or Gemini.
Supported Platforms
OpenAI's ChatGPT interface
Anthropic's Claude assistant
Google's Gemini AI
How It Works
Type your message
Use ChatGPT, Claude, or Gemini as you normally would. Type your prompt containing any sensitive information — names, emails, SSNs, financial data, or other PII.
Extension intercepts and scans
When you press Enter or click Send, the extension intercepts the message before it's submitted. It runs the PII detection engine locally in your browser to find sensitive entities.
Review the redaction overlay
A modal overlay appears showing exactly what was detected — each entity type, the original value, and the replacement token. You can choose to send the redacted version or go back and edit.
Redacted message is sent
If you confirm, the redacted text (with tokens like [EMAIL_1], [SSN_REDACTED]) is sent to the AI instead of your real data. The AI processes your request without ever seeing the sensitive information.
Response rehydration
When the AI responds using the redaction tokens, the extension can optionally replace them back for readability in the UI — while the actual data was never sent to the server.
Redaction Preview
Here is an example of what the extension shows when it detects PII in your message.
Hi, my name is Sarah Johnson. My email is sarah.johnson@gmail.com and my SSN is 412-68-7291. Can you help me with my tax return?
Hi, my name is [PERSON_1]. My email is [EMAIL_1] and my SSN is [SSN_REDACTED]. Can you help me with my tax return?
Detected Entity Types
File Upload Protection
The extension also intercepts file uploads on supported platforms. When you attach a document, the extension extracts the text content, scans it for PII, and shows a redaction preview before the file is sent. This ensures documents containing sensitive data are also protected.
Install the Extension
The browser extension is available for Chrome and Chromium-based browsers. Read the documentation for installation instructions.