leethax.net

While was historically a popular Firefox extension for cheating in web-based games like Angry Birds and Candy Crush Saga , it is important to note that the extension has largely become obsolete or non-functional in recent years due to browser security updates and the decline of Flash-based games.

As of April 2026, the original leethax.net extension is largely incompatible with modern versions of Firefox.

(32-bit or 64-bit) to maintain compatibility, though this is not recommended

  1. Go to the Source: Always navigate directly to the official leethax.net website. Avoid downloading ".xpi" files from third-party mirrors or random pop-up ads.
  2. Check Permissions: When installing any new extension, look at the permissions it asks for. A cheat extension should generally only need access to the specific game websites it supports, not your banking info or email.
  3. Firefox Security: Firefox may warn you that you are installing an unverified extension. This is standard for tools that modify game code. If you trust the source, proceed, but proceed with caution.