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Firefox

Lightbeam for Firefox Shows which Companies Track You Online

Lightbeam for Firefox Shows which Companies Track You Online

Jacob Kleinman

One morning after installing Lightbeam—a free Firefox add-on designed to help users visualize which companies are tracking them online—Mozilla’s Privacy and Public Policy Lead Alex Fowler went through his daily Internet routine. After visiting just four websites, the new feature revealed he had actually interacted with 120 different companies online. Lightbeam, which Mozilla introduced...