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Firefox 88 Combats Cross-Site Tracking to Improve User Privacy

April 20, 2021

For over two decades, the window.name property has been available for websites to store whatever data they choose to, but such data has often been allowed to leak between sites, essentially allowing for the tracking of users across the pages they visit.

The data that websites stored in window.name, Mozilla explains, has been exempt from the same-origin policy that prevented information sharing between websites. Thus, sites were able to share data about users via the window.name property.

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