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Private Browsing now includes Tracking Protection, which actively blocks domains and sites that are known to track users.

<!--Don't change this intro without approval from Legal team--> Tracking generally refers to the collection of a person’s browsing data across multiple sites. The Tracking Protection feature uses a list provided by Disconnect to identify and block trackers. {note}You can read more about tracking and the standards Disconnect uses to create its list [https://disconnect.me/trackerprotection here]. [https://wiki.mozilla.org/Security/Tracking_protection#Lists Learn more] about the lists used by Firefox for Tracking Protection. <!--'''Do Not Track''': If Tracking Protection is enabled, Firefox will tell websites that you do not want to be tracked, regardless of your [[How do I turn on the Do Not Track feature? | ''Do Not Track'' setting]].--> {/note} <!--Changes to preceding text requires review from Legal--> A shield icon will appear in your address bar whenever Firefox blocks tracking domains. ;[[Image:tracking protection 42]] To see which resources are being blocked, you can open the [https://developer.mozilla.org/docs/Tools/Web_Console web console] and look for messages under the Security tab. __TOC__ =Block lists in Firefox= You can change the block list used to block third-party trackers. By default, Private Browsing with Tracking Protection uses the Disconnect.me basic protection list. You can change this to use the Disconnect.me strict protection list instead. *The basic protection list blocks commonly known analytics trackers, social sharing trackers and advertising trackers. However, the basic protection list allows some known content trackers to reduce website breakage. *The strict protection list blocks all known trackers, including analytics trackers, social sharing trackers and advertising trackers as well as content trackers. The strict list will break some videos, photo slideshows and some social networks. ==Change your block list== #[[T:optionspreferences]] #{for not fx56}Click {menu Privacy} on the left{/for}{for fx56}Click {menu Privacy & Security} on the left and go to the '''Tracking Protection''' section{/for}. #Click the {button Change Block List} button next to {for not fx56}'''Use Tracking Protection in Private Windows'''{/for}{for fx56}'''Use Tracking Protection in Private Browsing to block known trackers'''{/for} and select the block list you want to use. #Click {button Save Changes}. You will see a "Restart Firefox" dialog box with the message ''Firefox must restart to change block lists.'' #Click the {button OK} button in the "Restart Firefox" dialog box. #After Firefox restarts, you can close the [[T:optionsorpreferences]] tab. =How to turn Tracking Protection on= {for fx57}You can choose to turn Tracking Protection on all the time, for [[Private Browsing - Use Firefox without saving history|Private Browsing]] only or not at all. You may choose to disable Tracking Protection for a particular site or for all sites. #Click {menu Privacy & Security} on the left and go to the '''Tracking Protection''' section. #Choose between the following options: #*'''Always''': Keep Tracking Protection on as you browse. #*'''Only in private windows''': Turns Tracking Protection on only if you're using [[Private Browsing - Use Firefox without saving history|Private Browsing]]. #*'''Never''': Turns off Tracking Protection for all sites. {/for} {for not fx57}Tracking Protection is enabled by default when you're in a [[Private Browsing - Use Firefox without saving history|Private Browsing]] window. You may choose to disable Tracking Protection for a particular site or for all sites.{/for} ==Turn off Tracking Protection for individual sites== #The shield icon will appear when Firefox is actively blocking trackers on a page. Click the shield icon to bring up the Control Center. #In the Control Center, click {button Disable protection for this session}. #;{for not fx57}[[Image:Disable tracking protection 42]]{/for}{for fx57}[[Image:tracking protection off 57]]{/for} #Once Tracking Protection is disabled, a shield icon with red strikethrough [[Image:tracking protection off fxos]] will appear in your address bar. {note}'''To re-enable Tracking Protection''', click the shield icon again and click {button Enable Protection}.{/note} Since Private Browsing mode doesn’t keep any information about your browsing session, when you disable Tracking Protection for a site, it only lasts for this session. When you start a new Private Browsing session, Tracking Protection will be turned on again for all sites. {for not fx57} ==Turn off Tracking Protection for all sites== #[[T:optionspreferences]] #{for not fx56}Click {menu Privacy} on the left{/for}{for fx56}Click {menu Privacy & Security} on the left and go to the '''Tracking Protection''' section{/for}. #Uncheck the box next to {for not fx56}'''Use Tracking Protection in Private Windows'''{/for}{for fx56}'''Use Tracking Protection in Private Browsing to block known trackers'''{/for}. #;{for not fx50}[[Image:privacy menu tp]]{/for}{for =fx50,=fx51,=fx53,=fx54,=fx55}[[Image:tp privacy menu 50]]{/for}{for =fx56}[[Image:Fx56Privacy&Security-Tracking]]{/for} #Close the tab to save your changes. {/for} {note}'''Note:''' You can also turn off Tracking Protection from the [[Private Browsing - Use Firefox without saving history|Private Browsing]] home page: ;[[Image:tracking protection private browsing]] If you're already in a Private Browsing window, type '''about:privatebrowsing''' in the address bar and press the {key Enter} key to go to the Private Browsing home page. {for fx48} Clicking on the green check-marked button will turn Tracking Protection off. If Tracking Protection is already turned off, you can turn it back on from the Private Browsing home page by clicking the same button, which will look like this: [[Image:Fx48TrackingOff]] {/for} {/note}