# Sensitive Data Obfuscator

> This extension enables confident and secure interaction with AI tools, ensuring your sensitive data remains protected while maintaining the full utility of LLM assistance.

Canonical page: [https://chrome-stats.com/d/sensitive-data-obfuscator](https://chrome-stats.com/d/sensitive-data-obfuscator)

## Overview

- **ID:** `sensitive-data-obfuscator`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Shahin
- **Category:** privacy-security
- **Daily users:** 3
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0.2
- **Last updated:** 2025-06-30
- **First published:** 2025-06-26
- **Size:** 42 KB
- **Data as of:** 2026-09-16
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/sensitive-data-obfuscator/)
- **Website:** [https://github.com/Sean-Khorasani/sensitive-data-obfuscator](https://github.com/Sean-Khorasani/sensitive-data-obfuscator)

## Description

Sensitive Data Obfuscator Extension

Overview

The Sensitive Data Obfuscator extension is a lightweight Data Loss Prevention (DLP) tool designed to protect sensitive information when interacting with Large Language Models (LLMs). It automatically detects and obfuscates confidential data—such as credit card numbers, passwords, and personal identifiers—when users copy and paste content into LLM chat interfaces.

What It Does

This Firefox extension acts as a security layer between you and AI tools, ensuring that sensitive data is protected before being sent as prompts. When you paste text containing sensitive information into LLM platforms like <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/cf6f55cbba6731f7030d49478c86cb1b6c503e9ea8cb3f1a019bd0e646726ebe/http%3A//Claude.ai" rel="nofollow">Claude.ai</a>, ChatGPT, or other AI chat interfaces, the extension:
<ul><li><strong>Automatically detects</strong> sensitive data patterns in real-time</li><li><strong>Obfuscates</strong> the data with contextual tokens (e.g., <code>[CREDIT_CARD]</code>, <code>[PASSWORD]</code>)</li><li><strong>Provides interactive management</strong> through a floating panel interface</li><li><strong>Allows selective reveals</strong> where you can choose to use original values when needed</li></ul>
Supported Data Types

The extension detects and protects:
<ul><li><strong>Financial Data</strong>: Credit card numbers, account numbers, transit numbers, institution numbers</li><li><strong>Personal Identifiers</strong>: Social Security Numbers (SSN), SIN, phone numbers, email addresses</li><li><strong>Credentials</strong>: Usernames, passwords, security codes</li><li><strong>Custom Patterns</strong>: Additional sensitive data patterns</li></ul>
How to Use

Basic Usage
<ol><li><strong>Copy sensitive data</strong> to your clipboard</li><li><strong>Paste into the LLM chat interface</strong> - sensitive data is automatically obfuscated</li><li><strong>Review the prompt</strong> - sensitive information appears as tokens like <code>[CREDIT_CARD]</code>, <code>[USERNAME]</code></li><li><strong>Manage data</strong> via the floating shield button that appears</li></ol>
Interactive Management

When sensitive data is detected, a floating shield button appears:
<ol><li><strong>Click the shield</strong> to open the Sensitive Data Manager</li><li><strong>View all detected items</strong> with their current display status</li><li><strong>Use available actions</strong>:</li><li><strong>Use Original</strong>: Show the actual value in the prompt</li><li><strong>Remove</strong>: Delete the sensitive field entirely</li></ol>
Supported Platforms

Currently optimized for:
- <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/cf6f55cbba6731f7030d49478c86cb1b6c503e9ea8cb3f1a019bd0e646726ebe/http%3A//Claude.ai" rel="nofollow">Claude.ai</a>
- ChatGPT/OpenAI
- Google Bard/Gemini
- Bing Chat
- <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/b6ee40e864c55b2385f7ec4cbf8abb637962f1e37d02b12a7527ba1dc807a354/http%3A//Perplexity.ai" rel="nofollow">Perplexity.ai</a>
- <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/1b628be5b898d667ba42436f49357e31cc45fd8d56cef0d5469c893ba1605f34/http%3A//You.com" rel="nofollow">You.com</a>

Privacy &amp; Security
<ul><li><strong>Local Processing</strong>: All detection and obfuscation happens locally in your browser</li><li><strong>No Data Transmission</strong>: Sensitive data never leaves your machine</li><li><strong>Temporary Storage</strong>: Original values are stored only in browser memory during the session</li><li><strong>Clean Prompts</strong>: Only obfuscated or user-approved data reaches LLM services</li><li><strong>Firefox Security Model</strong>: Follows Firefox's strict security guidelines</li></ul>
Use Cases
<ul><li><strong>Enterprise users</strong> sharing data snippets with AI tools</li><li><strong>Developers</strong> seeking code review while protecting credentials</li><li><strong>Researchers</strong> analyzing datasets containing personal information</li><li><strong>General users</strong> wanting to interact safely with AI assistants</li></ul>
Benefits
<ul><li><strong>Instant Protection</strong>: No need to manually redact sensitive information</li><li><strong>Selective Sharing</strong>: Choose exactly what data to reveal</li><li><strong>Mistake Prevention</strong>: Automatic detection prevents accidental data exposure</li><li><strong>Compliance Support</strong>: Helps maintain data protection standards</li><li><strong>Productivity</strong>: Streamlined workflow without compromising security</li><li><strong>Firefox Integration</strong>: Native Firefox experience with proper permissions</li></ul>

## Rankings

- #53,146 — Overall
- #115 — data

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `tabs`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Secure Flow](https://chrome-stats.com/d/secure-flow)
- [Prompt Guard](https://chrome-stats.com/d/prompt-guard) — 1 users
- [Shadow AI Firewall](https://chrome-stats.com/d/shadow-ai-firewall) — 1 users
- [TrojAI Browser Extension](https://chrome-stats.com/d/trojai-browser-extension) — 1 users, 1.00 / 5
- [Prompt Armour — AI Privacy Guard](https://chrome-stats.com/d/prompt-armour-ai-privacy-guard) — 1 users
- [AI Sanitizer](https://chrome-stats.com/d/ai-sanitizer-public) — 1 users
- [AI Firewall](https://chrome-stats.com/d/ai-firewall) — 1 users
- [AI Anti-Leak](https://chrome-stats.com/d/ai-anti-leak) — 1 users
- [Strac Browser (Gen AI) DLP](https://chrome-stats.com/d/strac-browser-dlp) — 22 users
- [Nightfall DLP for Browsers](https://chrome-stats.com/d/nightfall-dlp-for-browsers) — 1,543 users
- [PasteGuard](https://chrome-stats.com/d/pasteguard22) — 1 users
- [PromptProtect](https://chrome-stats.com/d/promptprotect)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/sensitive-data-obfuscator)