# MasterKey

> Derivate your passwords from a secret key and the service name

Canonical page: [https://chrome-stats.com/d/masterkey](https://chrome-stats.com/d/masterkey)

## Overview

- **ID:** `masterkey`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Nino
- **Category:** privacy-security
- **Daily users:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0.1resigned1
- **Last updated:** 2024-05-02
- **First published:** 2016-01-25
- **Size:** 77 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/masterkey/)

## Description

MasterKey is a Firefox add-on that allows you to generate a unique password for each website using a single master key and the service name. By using this add-on, you only need to remember one password, ensuring the security of your accounts even if a website's passwords are leaked.

## Rankings

- #78,591 — Overall

## Permissions and access

### Permissions

- `activeTab`
- `contextMenus`
- `clipboardWrite`
- `storage`

### Content script matches

- `*`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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/masterkey)