Third-party cookies and Firefox tracking protection

Third-party cookies are [[Cookies|cookies]] that are set by a website other than the one you are currently on. For example, cnn<!-- -->.com might have a Facebook like button on their site. That like button will set a cookie that can be read by Facebook. That would be considered a third-party cookie. Some advertisers use these types of cookies to track your visits to the various websites on which they advertise. If you are concerned about this, you can disable third-party cookies in Firefox. {note}'''Note:''' * If you are concerned about tracking by advertisers, see also [[How do I turn on the Do-not-track feature?]]. * Disabling third-party cookies in Firefox can stop some types of tracking by advertisers, but not all. * Some websites (e.g. Microsoft's Hotmail, MSN, and Windows Live Mail webmail) use third-party cookies for purposes that are not necessarily privacy concerns, and disabling third-party cookies may cause problems with those sites.{/note} Third-party cookie settings are available in the {for win}Options{/for}{for mac,linux}Preferences{/for} window's [[Options window - Privacy Panel|Privacy panel]]: # [[T:optionspreferences]] # [[T:customhistory]] # Uncheck '''Accept third-party cookies'''.{for win,fx5}[[Image:Disabling Third Party Cookies - Fx5 Win]]{/for}{for win,fx35}<br/> <br/> [[Image:c8b33ebc986c4f8bdd09c086906a0eac-1258089410-978-1.png]] <br/>{/for}{for mac}<br/> <br/> [[Image:c8b33ebc986c4f8bdd09c086906a0eac-1258149074-703-1.png]] <br/>{/for} # [[T:closeOptionsPreferences]]. [[Template:ShareArticle|link=http://mzl.la/LJ07s2]]

Third-party cookies are cookies that are set by a website other than the one you are currently on. For example, cnn.com might have a Facebook like button on their site. That like button will set a cookie that can be read by Facebook. That would be considered a third-party cookie.

Some advertisers use these types of cookies to track your visits to the various websites on which they advertise. If you are concerned about this, you can disable third-party cookies in Firefox.

Third-party cookie settings are available in the OptionsPreferences window's Privacy panel:

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.

2. Select the Privacy & Security panel and go to the History section.

3. In the drop-down menu next to Firefox will, choose Use custom settings for history.
4. Uncheck Accept third-party cookies.
   
   
   
   
   
   
5. Close the Settings page. Any changes you've made will automatically be saved. .