# Security Headers Checker

> A Mozilla extension to check website security headers and provide recommendations.

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

## Overview

- **ID:** `security-headers-checker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** Karl Walker
- **Daily users:** 3
- **Weekly downloads:** 4
- **Version:** 1.1
- **Last updated:** 2025-03-17
- **First published:** 2025-03-16
- **Size:** 13 KB
- **Data as of:** 2025-07-28
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/security-headers-checker/)
- **Website:** [https://www.234789.net/](https://www.234789.net/)

## Description

A Mozilla extension to check website security headers and provide recommendations.

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `<all_urls>`
- `storage`
- `notifications`
- `tabs`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High 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 is not longer available in the store

> 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/security-headers-checker)