# Timing Side-Channel Profiler (TSP)

> Local-only timing profiler to help security researchers detect timing side-channels. Runs isolated, no personal data.

Canonical page: [https://chrome-stats.com/d/timing-side-channel-profiler](https://chrome-stats.com/d/timing-side-channel-profiler)

## Overview

- **ID:** `timing-side-channel-profiler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** 0xgz
- **Version:** 1.0
- **Last updated:** 2025-09-23
- **First published:** 2025-09-20
- **Size:** 27 KB
- **Data as of:** 2026-04-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/timing-side-channel-profiler/)
- **Website:** [https://0xgz.com/](https://0xgz.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/timing-side-channel-profiler/privacy/](https://addons.mozilla.org/firefox/addon/timing-side-channel-profiler/privacy/)

## Description

This extension is a local-only timing side-channel profiler designed for penetration testers and security researchers. It instruments fetch, XHR, and resource timings to help detect possible timing leaks. All data stays local in your browser. No external servers, no personal data collection.

## Permissions and access

### Permissions

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

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High 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 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/timing-side-channel-profiler)