Firefox 22 Will Block Third Party Cookies

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Jonathan Mayer, a researcher at Stanford, has contributed a patch for Firefox that will block third-party cookies from installing on the user's browser. The patch is set to be incorporated into Firefox 22. For some sense of timing on the project, Firefox 19 was released on Tuesday.

With the patch, Firefox would allow all cookies from sites that a user actively visits, but would block cookies from third-party sites if a user has not visited that cookie's origin site. Advertisers generally place third-party cookies and can collect data about a user across several websites with them.

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http://arstechnica.com/business/2013...party-cookies/