Installation

Follow the steps below to install the Stealer extension.

Check previous version

If you were user of version under 2.5 (before 1 April 2026), please click the link below to upgrade to the new version.

Upgrade to new version: click here

Download and install Mozilla Firefox browser.

For the best experience, we recommend using Firefox.

Install the Tampermonkey extension for your browser. If tampermonkey is already installed in your browser, you can skip this step.

Add the Stealer script to Tampermonkey.

Go to Zalando Lounge and start using Stealer!