Mozilla, creator of Web browser Firefox, is updating its browser code to "dramatically change the handling of third-party cookies," writes Jules Polonetsky, CIPP, of the U.S.-based Future of Privacy Forum. Comments from Dan Wittes of Mozilla on the company's message board explained that third-party cookies will now only be persistent for a given session, while those who opt out of the default to accept cookies would completely disable them. "So if a user keeps their computer on and browser open, tracking across sites will continue," Polonetsky writes, "but if a user closes their browser, tracking cookies will be deleted."
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