Firefox To Ship 'Network Partitioning' As a New Anti-Tracking Defense

An anonymous reader quotes a report from ZDNet: Firefox 85, scheduled to be released next month, in January 2021, will ship with a feature named Network Partitioning as a new form of anti-tracking protection. The feature is based on "Client-Side Storage Partitioning," a new standard currently being developed by the World Wide Web Consortium's Privacy Community Group. "Network Partitioning is highly technical, but to simplify it somewhat; your browser has many ways it can save data from websites, not just via cookies," privacy researcher Zach Edwards told ZDNet in an interview this week. "These other storage mechanisms include the HTTP cache, image cache, favicon cache, font cache, CORS-preflight cache, and a variety of other caches and storage mechanisms that can be used to track people across websites." Edwards says all these data storage systems are shared among websites. The difference is that Network Partitioning will allow Firefox to save resources like the cache, favicons, CSS files, images, and more, on a per-website basis, rather than together, in the same pool. This makes it harder for websites and third-parties like ad and web analytics companies to track users since they can't probe for the presence of other sites' data in this shared pool. The Mozilla team expects [...] performance issues for sites loaded in Firefox, but it's willing to take the hit just to improve the privacy of its users.Read more of this story at Slashdot.
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