# Shadow AI Firewall

> Client-side DLP for AI chats: detects sensitive values in what you send, replaces them in outbound requests on supported sites, and shows originals again locally in responses.

Canonical page: [https://chrome-stats.com/d/shadow-ai-firewall](https://chrome-stats.com/d/shadow-ai-firewall)

## Overview

- **ID:** `shadow-ai-firewall`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Varveroglou Vasileios
- **Category:** privacy-security,social-communication
- **Daily users:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-03-30
- **First published:** 2026-03-27
- **Size:** 258 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/shadow-ai-firewall/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/shadow-ai-firewall/privacy/](https://addons.mozilla.org/firefox/addon/shadow-ai-firewall/privacy/)

## Description

<strong>Shadow AI Firewall</strong> helps reduce accidental exposure of personal and sensitive data when you use popular AI assistants (ChatGPT, Claude, Gemini, Copilot, Perplexity, and others matched by the add-on).

<strong>What it does</strong>
- Runs only on supported AI websites from the manifest.
- Intercepts outgoing requests so <strong>payloads are scrubbed before they are sent</strong> when the add-on detects patterns you enabled (for example emails, IBANs, payment-card-like numbers, Greek tax/social identifiers, and optional NLP-based masking for names/places).
- Keeps a <strong>local mapping</strong> so replies that reference placeholders can be <strong>shown with your original text</strong> in the page UI where the add-on applies unmasking.

<strong>What it is not</strong>
- Not a complete enterprise DLP suite; heuristics can miss items or flag false positives.
- Does not replace your organization’s security policy or legal review.

<strong>Privacy</strong>
- Default/personal use: settings are stored locally. Optional enterprise mode may send <strong>minimal metadata</strong> (e.g. scanner type and host class) only if you configure a key; see the privacy policy.

<strong>Support</strong>
Build and source submission notes for reviewers are in the repository <strong>README</strong> (Mozilla AMO section).

## Rankings

- #89,346 — Overall

## Permissions and access

### Permissions

- `storage`
- `scripting`

### Host permissions

- `*://chat.openai.com/*`
- `*://chatgpt.com/*`
- `*://claude.ai/*`
- `*://*.anthropic.com/*`
- `*://*.openai.com/*`
- `*://gemini.google.com/*`
- `*://bard.google.com/*`
- `*://aistudio.google.com/*`
- `*://*.googleapis.com/*`
- `*://copilot.microsoft.com/*`
- `*://*.bing.com/*`
- `*://perplexity.ai/*`
- `*://*.perplexity.ai/*`
- `*://meta.ai/*`
- `*://*.meta.ai/*`
- `*://x.ai/*`
- `*://grok.com/*`
- `*://you.com/*`
- `*://phind.com/*`
- `*://*.mistral.ai/*`
- `*://poe.com/*`
- `https://*.supabase.co/*`

### Content script matches

- `chat.openai.com`
- `chatgpt.com`
- `claude.ai`
- `*.anthropic.com`
- `gemini.google.com`
- `bard.google.com`
- `aistudio.google.com`
- `copilot.microsoft.com`
- `perplexity.ai`
- `meta.ai`
- `x.ai`
- `grok.com`
- `you.com`
- `phind.com`
- `*.mistral.ai`
- `poe.com`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Request access to the following domains: openai.com, chatgpt.com, claude.ai, anthropic.com, google.com, microsoft.com, perplexity.ai, meta.ai, x.ai, grok.com, you.com, phind.com, mistral.ai, poe.com, googleapis.com, bing.com, supabase.co
- 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).

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Source: [Chrome-Stats](https://chrome-stats.com/d/shadow-ai-firewall)