# FENSE Security

> A simple extension to easily block distracting websites and urls for Firefox.

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

## Overview

- **ID:** `fense-security`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Pipeline
- **Category:** web-development,privacy-security
- **Version:** 1.0
- **Last updated:** 2021-01-27
- **First published:** 2021-01-27
- **Size:** 818 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/fense-security/)

## Description

FENSE Security is a Firefox add-on that allows users to block websites and specific parts of websites, helping them stay focused and avoid distractions. With FENSE Security, you can block websites everywhere and customize your blocking preferences to fit your needs.

## Rankings

- #144,833 — Overall
- #190 — security

## Permissions and access

### Permissions

- `webNavigation`
- `webRequest`
- `webRequestBlocking`
- `activeTab`
- `tabs`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Very 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

- [FENSE Security](https://chrome-stats.com/d/fense-security-staging)
- [FENSE Security](https://chrome-stats.com/d/staging-fense-security)
- [Facebook URL Blocker](https://chrome-stats.com/d/facebook-url-blocker) — 3 users
- [Block Websites](https://chrome-stats.com/d/block-websites) — 26 users
- [FocusShield - Block Distractions](https://chrome-stats.com/d/focusshield-block-distractions)
- [Good Fences](https://chrome-stats.com/d/good-fences) — 3 users
- [Website Blocker](https://chrome-stats.com/d/the-website-blocker) — 1,913 users, 3.94 / 5
- [Simple Site Blocker](https://chrome-stats.com/d/simple-site-blocker) — 22 users, 4.50 / 5
- [Security Shield](https://chrome-stats.com/d/security-shield) — 1 users
- [Fox Web Security](https://chrome-stats.com/d/fox-web-security) — 276 users, 2.40 / 5
- [Distraction Blocker Extension](https://chrome-stats.com/d/distraction-blocker-extension)
- [Precision Site Blocker](https://chrome-stats.com/d/precision-site-blocker)

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Source: [Chrome-Stats](https://chrome-stats.com/d/fense-security)