HTTP cookie: Difference between revisions

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====Other uses====
The term ''supercookie'' is sometimes used for tracking technologies that do not rely on HTTP cookies. Two such ''supercookie'' mechanisms were found on Microsoft websites in August 2011: [[cookie syncing]] that respawned MUID (machine unique identifier) cookies, and [[HTTP ETag|ETag]] cookies.<ref name="Ivyb7">{{cite web |last=Mayer |first=Jonathan |date=19 August 2011 |title=Tracking the Trackers: Microsoft Advertising |url=http://cyberlaw.stanford.edu/node/6715 |publisher=The Center for Internet and Society |access-date=28 September 2011 |archive-url=https://web.archive.org/web/20110926122412/http://cyberlaw.stanford.edu/node/6715 |archive-date=26 September 2011 |url-status=live}}</ref> Due to media attention, Microsoft later disabled this code.<ref name="8LKGy">{{cite web |last=Vijayan |first=Jaikumar |title=Microsoft disables 'supercookies' used on MSN.com visitors |website=Computerworld |date=Aug 19, 2011 |url=http://www.computerworld.com/article/2510494/data-privacy/microsoft-disables--supercookies--used-on-msn-com-visitors.html |access-date=23 November 2014 |archive-url=https://web.archive.org/web/20141127185609/http://www.computerworld.com/article/2510494/data-privacy/microsoft-disables--supercookies--used-on-msn-com-visitors.html |archive-date=27 November 2014 |url-status=dead }}</ref> In a 2021 blog post, Mozilla used the term ''supercookie'' to refer to [[#Browser cache|the use of browser cache]] as a means of tracking users across sites.<ref name="PyGKV">{{cite web |date=26 January 2021 |url=https://blog.mozilla.org/security/2021/01/26/supercookie-protections/ |title=Firefox 85 Cracks Down on Supercookies |first1=Steven|last1=Englehardt|first2=Arthur|last2=Edelstein |website=Mozilla Security Blog |url-status=live |archive-url= https://web.archive.org/web/20240225171134/https://blog.mozilla.org/security/2021/01/26/supercookie-protections/ |archive-date= Feb 25, 2024 }}</ref>
 
===Zombie cookie===