Firefox Monitor warns if your online accounts were involved in a data breach. Find out if you’ve been in a data breach, get alerts about new breaches, and take steps to protect your online accounts. Firefox Monitor is provided by Mozilla. Jun 04, · Launch Mozilla Firefox. It's a round icon depicting a fox curled around a globe. If you can't find it, search for Mozilla in the Start menu. 2. Navigate to the menu. Click on the triple bar (≡) icon in the top right corner to extend the menu. 3. Navigate to account settings. May 10, · What’s happened now? On 8 May, the firm updated its blog to confirm a permanent fix for Firefox for desktop and Android and ESR This replaces the initial, temporary fix .