Welcome to the project Foxhound Wiki!

This page provides a rough guideline on how the pages are meant to be used.

The general guide to build Foxhound, potentially with support for browser automation via Playwright, is available under Building Foxhound.

If you want to build Foxhound manually, for example, to use it under Windows or to debug build failures, we provide some guides at Building Manually.

You can either use Foxhound interactively, e.g., by writing an extension to display taint flows, or via a browser automation framework such as Playwright.

General information on the direct usage is provided under Observing Taint Flows. For an example, to get started with Playwright, please check out Playwright Integration.

A list of available taint sources and sinks is provided under Source and Sink Listings.

Foxhound is used in both industrial settings and academia. We collect publications that successfully used Foxhound under Publications. If your work builds on Foxhound and has been published, please open an issue so we can include it! :)

Foxhound is open source, and we are happy to accept external contributions. As the code base is very large and getting started is somewhat challenging, we also provide some advice on how to start hacking and debugging Foxhound.

A simple way to contribute is to add test cases for issues you found with Foxhound. This enables us to reproduce them and, hopefully, fix them. This is done via Mochi Tests.

• Adding Mochi tests

• Different String Types Used in Firefox
• How the Garbage Collector Works

• Dealing with Errors related to Rust Bindings
• Support to understand how SpiderMonkey processes JavaScript code
• How to Debug Memory Leaks
• How to enable and analyze Crashes via Crash Dumps

We aim to keep Foxhound in line with the newest version of Firefox, which Playwright supports. So, there are some rough guides on how to pull in changes from upstream Firefox.

• Updating from upstream Firefox
• Release process and plan of Foxhound