Revision History - Firefox Browser Privacy Notice
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Version Comments
A completely new version has been posted.
Changes under "Firefox Health Report" and "Crash Reporting".
Changes made under "Referral and Campaign Tracking"; New section added entitled "Firefox Screenshots".
Changes under "Usage Statistics".
Changes under "Firefox Health Report".
A new section has been added called "Referral and Campaign Tracking"; The section "Firefox for Android and Firefox for iOS" has been removed.
A new link has been added about sending anonymous usage data from Firefox on mobile devices (for Android and iOS):
A paragraph has been added at the end indicating that this privacy notice is for the most recent general release versions of Firefox.
Several updates and new sections have been added.
The sections on "Tiles", "Default Search", and "Search Suggestions" have been modified; A new section called "Push Notifications" has been added.
A new section has been added concerning Search Suggestions.
A reference to Firefox for iOS has been added to the document.
Under the "Snippets" section, the following has been added: "We only retain this information after 60 days in aggregate form".
New paragraph added concerning Firefox for Android only.
New sections added concerning "Mozilla sponsored snippets", "Default Search" and "SSL Errors".
Added: "When Telemetry is enabled, certain short-term experiments may collect information about visited sites."
The section about "Tiles" has been updated concerning "certain short-term Telemetry experiments".
Usage statistics now turned on by default in Developer Edition builds of Firefox.
This is the initial version that ParanoidPaul captured. It is not necessarily the first version of the document.
Indicates that the document has been updated silently, without a change to the posted "last modified" date!

	July 31, Effective September 28, 2017 

	We care about your privacy. When Firefox sends information to Mozilla (that's us), our privacy policy describes how we handle that information.   AT MOZILLA, WE BELIEVE THAT PRIVACY IS FUNDAMENTAL TO A HEALTHY INTERNET.

THINGS YOU SHOULD KNOW	That’s why we build Firefox, and all our products, to give you greater control over the information you share online and the information you share with us. We strive to collect only what we need to improve Firefox for everyone.  

	Firefox automatically connects to us	In this Privacy Notice, we explain what data Firefox shares and our service providerspoint you to provide updates, security, Snippets, Firefox Health Report,settings to share even less. We also adhere to the practices outlined in the Mozilla privacy policy for how we receive, handle and other features.share information we collect from Firefox.    


	Browser Updates: Once per day, Firefox sends the following info to Mozilla when it checks for browser updates: your Firefox version information, language preference, operating system, and version. You can turn off updates by following these instructions but it may leave you open to security vulnerabilities. IMPROVE PERFORMANCE AND STABILITY FOR USERS EVERYWHERE

	Add-ons Blocklist:	INTERACTION DATA: Firefox sends data about your interactions with Firefox contacts Mozilla once per day to check for add-on information to check for malicious add-ons. This includes, for example: browser version, OSus (such as number of open tabs and version, locale, totalwindows; number of requests, time of last request, time of day, IP address,webpages visited; number and the listtype of add-ons you have installed. You can turn off metadata updates at any time, but it may leave you open to security vulnerabilities.  installed Firefox Add-ons; and session length) and Firefox features offered by Mozilla or our partners (such as interaction with Firefox search features and search partner referrals).   

	SNIPPETS 	TECHNICAL DATA: Firefox sends data about your Firefox version and language; device operating system and hardware configuration; memory, basic information about crashes and errors; outcome of automated processes like updates, safebrowsing, and activation to us. When Firefox sends data to us, your IP address is temporarily collected as part of our server logs.   

	Firefox's default home page () loads small bits of information right below	Read the search bar that we think will be usefultelemetry documentation for Desktop, Android, or iOS or learn how to you. We call these "snippets". About once per day, Firefox connects to Mozilla and provides you with new snippets, if available. Mozilla may collect how often snippets are clicked, snippet name, browser locale, and which versionopt-out of Firefox you're using. We only retain this information after 60 days in aggregate collection. 

	To help display relevant snippets, Firefox sends Mozilla a monthly request to look up your location at a country level using your IP address. We then send that country level information back to Firefox, where it's stored locally. Firefox will then choose snippets to show you based on the locally stored country information. SET A DEFAULT SEARCH PROVIDER

	Some Mozilla sponsored snippets are interactive and allow 	 LOCATION DATA: When you first use Firefox, it uses your IP address to optionally shareset your phone number or email address. For example, you can enterdefault search provider based on your phone number to receive an SMS to install Firefox on Android. Your information is received and handled by our email and mobile marketing vendor.  country. Learn more.


	Firefox Health Report (FHR) is designed to provide you with insights about your browser's stability and performance and with support tips should you experience issues,displays content, such as high crash rates or slow startup times.“Snippets” (messages from Mozilla) and Top Sites (websites suggested by Mozilla collects and aggregates your data with that of other Firefox users and sends it back to your browser so you can see how your Firefox performance changes over time. This data includes, for example: device hardware, operating system,first-time Firefox version, add-ons (count and type), timing of browser events, rendering, session restores, length of session, interaction with search access points and use of Firefox search partner codes, how old a profile is, basic information about errors and crashes, and count of pages. FHR does not send Mozilla URLs that you visit. users).

	We use the data sent through FHR	LOCATION DATA: Firefox uses your IP address to provide users with FHR's functionality, such as helping you analyze and address performance issues withsuggest relevant content based on your browser. We also use what we learn from the FHR data in the aggregate to make Firefox better. You can choose to turn data sharing  

	SECURITY 	TECHNICAL & INTERACTION DATA: Firefox sends us data such as the position, size and placement of content we suggest, as well as basic data about your interactions with Firefox’s suggested content. This includes the number of times suggested content is displayed or clicked.  

	Firefox automatically checks for malicious or forged web pages, bad add-ons, and third-party issued SSL certificates. 	WEBPAGE DATA FOR SNIPPETS: When you choose to click on a Snippet link, we may receive data about the link you followed. This information is not associated with any other information about you. Learn more.  

	Secure Website Certificates: When you visit a secure website (i.e. "https"), Firefox will validate the website's certificate. This may involve communicating with a third-party status provider specified by the certificate. Firefox sends to this third-party information identifying the site's certificate. You can change your preferences, but if you disable the online verification feature, Firefox cannot confirm the identity of the website you are visiting. Turning off this feature may increase the risk of your private information being intercepted. If you encounter an untrusted connection, you can also choose to send Mozilla the associated certificates. IMPROVE SECURITY FOR USERS EVERYWHERE

	Firefox Forgery and Attack Protection: About twice per hour,	TECHNICAL DATA FOR UPDATES: Desktop versions of Firefox downloads Google's SafeBrowsing listsperiodically check for browser updates by connecting to help block access to sitesMozilla servers. Your Firefox version, language, and downloads thatdevice operating system are malicious or forged (Google's privacy policy is at For downloaded executables that do not appear in these lists,used to apply the correct updates. Mobile versions of Firefox may send metadata, including URLs associated with the downloaded file,connect to the SafeBrowsing service. Visit service if you used one to learn more about or disable Safe Browsing. If you disable these features, Firefox cannot warn you of potentially illegitimate or malicious websites or downloaded and install Firefox. Learn more.  

	USAGE STATISTICS (also called "Telemetry" in non-release builds) 	TECHNICAL DATA FOR ADD-ONS BLOCKLIST: Firefox for Desktop and Android periodically connect to Mozilla to protect you and others from malicious add-ons. Your Firefox version and language, device operating system, and list of installed add-ons are needed to apply and update the add-ons blocklist. Learn more.   

	Usage statistics or "Telemetry" is a feature in	WEBPAGE AND TECHNICAL DATA TO GOOGLE’S SAFEBROWSING SERVICE: To help protect you from malicious downloads, Firefox that sends Mozilla usage, performance, and responsiveness statisticsbasic information about user interface features, memory, and hardware configuration. Your IP address is also collected as a part of a standard web log. Usage statistics are transmitted using SSL and help us improve future versions of Firefox. Once sentunrecognized downloads to Mozilla, usage statistics are aggregated and made available to a broad range of developers,Google's SafeBrowsing Service, including both Mozilla employeesthe filename and public contributors. When Telemetry is enabled, certain short-term experiments may collect information about visited sites. the URL it was downloaded from.  

	This feature is turned on by default in Nightly and Beta/Developer Edition builds of	Learn more or read Google’s Privacy Policy. Opting out prevents Firefox to help those users provide feedback to Mozilla. In the general release versionfrom warning you of Firefox, this feature is turned off by default. potentially illegitimate or malicious websites or downloaded files.  

	You can learn more	WEBPAGE AND TECHNICAL DATA TO CERTIFICATE AUTHORITIES: When you visit a secure website (usually identified with a URL starting with "HTTPS"), Firefox validates the website's certificate. This may involve Firefox sending certain information about Telemetry here and howthe website to enable or disable it.the Certificate Authority identified by that website.  

	TILES 	Opting out increases the risk of your private information being intercepted. Learn more.  

	Tiles are a feature of Firefox displayed on new tab pages. In order to provide the tiles feature, Firefox sends to Mozilla data relating to the tiles such as number of clicks, impressions, your IP address, locale information, and tile specific data (e.g., position and size of grid). In Firefox Beta, certain short-term Telemetry experiments (see above) for Tiles may collect information about commonly visited domains.  CRASH REPORTS

	DEFAULT SEARCH 	By default on desktop versions of Firefox, we will ask you to share a report with more detailed information about crashes with Mozilla, but you always have the choice to decline.

	To help choose the best default search engine for your location, Firefox sends Mozilla	SENSITIVE DATA: Crash reports include a request once to look up your location‘dump file’ of Firefox’s memory contents at a country level using your IP address. We then sendthe time of the crash, which may contain data that country level information backidentifies you or is otherwise sensitive to Firefox, where it's stored locally. Firefox will then choose which search engine to use as its default based on the locally stored country  

	SEARCH SUGGESTIONS 	WEBPAGE DATA: Crash reports include the active URL at time of crash.  

	Search suggestions is a feature to help you to find out common phrases that other people have searched for. These search suggestions are offered by your Default Search Engines (such as Google, Yahoo, etc.)	TECHNICAL DATA: Crash reports include data on why Firefox crashed and not by Firefox. If you enable this feature, and your Default Search Engine supports suggestions, Firefox may send the terms you type in the Awesome Bar or Search Bar to your Default Search Engine to retrieve suggestions,state of device memory and is governed byexecution during the applicable Privacy Policy from your Default Search Engine. You can learn more about Search Suggestions here and how to enable or disable it.crash.  

	REFERRAL AND CAMPAIGN TRACKING  	Read the full documentation here. 

	To help us understand and improve our marketing campaigns, Firefox sends certain information by default. This includes “Referral Data” such as the website domain or advertising campaign that referred you to download and install Firefox, as well as “Interaction Data” about what features you use in Firefox. MEASURE AND SUPPORT OUR MARKETING

	REFERRAL DATA On Android and iOS, Firefox sends Referral Data to	CAMPAIGN AND REFERRAL DATA: This helps Mozilla understand the effectiveness of our mobile analytics vendor, and also includes a Google advertising ID, IP address, timestamp, country, locale, operating system, and app version. Learn more here, including how to disable this campaigns. 

	On desktop,Desktop: Firefox records andby default sends Referral Data to Mozilla as part of Firefox Health Report. Learn more here, including howHTTP data that may be included with Firefox’s installer. This enables us to opt-outdetermine the website domain or disable this reporting.advertising campaign (if any) that referred you to our download page. Read the documentation or opt-out before installation. 

	INTERACTION DATA On iOS,	On iOS and Android: Firefox by default sends Interaction Datamobile campaign data to Adjust, our analytics vendor, which has its own privacy policy. Mobile campaign data includes a Google advertising ID, IP address, timestamp, country, language/locale, operating system, and app version. Read the documentation.  


	On iOS and Android: Firefox by default sends data about what features you use in Firefox to Leanplum, our mobile marketing vendor, which has its own privacy policy. This data allows us to test different features and experiences, as well as provide customized messages and recommendations for improving your experience with Firefox. Learn more about this data collection here, and

	Read the documentation for iOS or Android, or learn how you canto disable this feature.  


	When you ask it to, Firefox also connects to Mozilla to provide you with features such as Sync, location services, crash reporting, and add-ons.IF YOU USE THESE FEATURES, FIREFOX WILL SHARE DATA TO PROVIDE FUNCTIONALITY:


	Firefox Sync	You can perform searches directly from several places in Firefox, including the Awesome Bar, Search Bar, or on a New Tab. Mozilla does not receive your search queries. Query data is a service that allows yousent to sync your Firefox bookmarks, browsing history, passwords, and settings across all of your devices. If you use the Sync service, you can read the Firefox Syncsearch provider, which has its own privacy notice.  policy. 

	LOCATION SERVICES	SEARCH SUGGESTIONS: Firefox by default sends search queries to your search provider to help you discover common phrases other people have searched for and improve your search experience. These data will not be sent if your selected search provider does not support search suggestions. 

	Firefox has a feature that allows sites	Learn more, including how to request your location (e.g., to allow those sites to show your location on a map). If a site requests your location, Firefox seeks your permission before determining and sharing your location. In order to determine your location, Firefox may use several pieces of data to determine your location, including your operating systems geolocation features, Wi-Fi networks, cell phone towers, or IP address. Estimating your location involves sending some ofdisable this information to Google's geolocation service, which has its own privacy policy.feature.  


	On desktop	FIREFOX ACCOUNT DATA: Mozilla receives your email address and Android,a hash of your password when you have the optioncreate a Firefox Account. You can choose to send Mozillainclude a report with more detailed information afterdisplay name or profile image. Your email address is sent to our email vendor, SalesForce Marketing Cloud, which has its own privacy policy. If you use your Firefox crashesAccount to help us improve Firefox. This includes technical information suchlog into other websites or services (such as why Firefox crashed,AMO or Pocket), we receive the active URL and the statetimestamp of Firefox's memory usage at the time of the crash, which may include personal information. We make portions of crash reports available publicly at Before publicly posting crash reports, we take steps to automatically redact personal information. We do not redact anything you may write in the comments box.  your log-in from those services.   

	SSL ERRORS 	LOCATION DATA: For security purposes, we store the IP addresses you use to access your Firefox Account in order to approximate your city and country. We use this data to send you email alerts if we detect suspicious activity, such as account logins from other locations.  

	You have the option	INTERACTION DATA: We receive data such as visits to send Mozilla an error report when a secure website connection is broken. This report recordsand interaction with the Firefox Accounts website certificate as well as diagnostic error codes. This information helps Mozilla monitor the effectiveness of "pinned" website certificates and detect potential phishing attacks against our users.  menu preferences, and interactions with onboarding, email and SMS messages. Read more about Mozilla’s data practices for websites and email.   

	ADD-ONS 	TECHNICAL DATA: To display which devices are synced to your Firefox Account and for functionality, we store your device operating system, browser and version, timestamp, locale, and the same information for devices connected to your account.   

	Firefox offers a Get Add-ons page of	Read the Add-ons Manager that features popular add-ons and displays personalized recommendations based on the add-ons you already have installed. To display the personalized recommendations, Firefox sends information to Mozilla,full documentation or learn more, including the list of add-ons you have installed, Firefox version information, and your IP address. This communication only happens when the Get Add-ons area is open and can be turned off by following these instructions.The add-ons manager in Firefox has a search field where you can enter key wordshow to perform searches and Mozilla collects these key word searches, as well asdelete your Firefox version information, locale, and OS to show you recommendations.  account. 


	Push Notifications allow sites to send notifications and updates to	SYNCED DATA: If you if you opt-in. To receive notifications, Firefox sends information toenable Sync, Mozilla about what sites you have agreed to receive Push Notification from. We store thisreceives the information that you sync across devices in anonymized form, along with the number of notifications each site sends you. To help developers improve their use of Push Notifications, Mozillaencrypted form. This may share aggregatedinclude Firefox tabs, add-ons, passwords, payment autofill information, bookmarks, history, and preferences. Deleting your Firefox Account will delete related Firefox Sync content. You can also read the documentation.  

	TECHNICAL AND INTERACTION DATA: If you enable sync, Firefox will periodically send basic information with certain developers includingusing Telemetry about the number of visitorsmost recent attempt to their site that have subscribedsync your data, such as when it took place, whether it succeeded or unsubscribedfailed, and what type of device is attempting to their Push Notifications.sync. You can manage Push Notifications in Firefox by following these instructions.also read the documentation.  

	Learn more, including how to enable or disable sync. 


 	 LOCATION DATA TO GOOGLE'S GEOLOCATION SERVICE: Firefox always asks before determining and sharing your location with a requesting website (for example, if a map website needs your location to provide directions). To determine location, Firefox may use your operating system’s geolocation features, Wi-fi networks, cell phone towers, or IP address, and may send this data to Google's geolocation service, which has its own privacy policy.

	Learn more. 


	SCREENSHOT UPLOADSUPLOADS: Screenshots you choose to upload are sent to Mozilla and stored for the limited amount of time indicated, which you can change. We may access your uploaded screenshots when reasonably necessary for the operation of the service. You can delete your uploaded screenshots at any time.  

	INTERACTION DATADATA: We receive data such as visits to the Firefox Screenshots website, how often uploaded screenshots are accessed and shared by you or others, and your interactions with buttons, tiles, and mouse movements related to capturing screenshots.
 For visits to the Firefox Screenshots website, our websites privacy notice describes the types of data we collect.  

	TECHNICAL DATA	For visits to the Firefox Screenshots website, our websites privacy notice describes the types of data we may additionally collect.  

	TECHNICAL DATA: We receive data such as the average size and number of your uploaded screenshots, your Firefox browser version, device operating system, and errors. The IP address accessing the Firefox Screenshots website is temporarily collected as part of a standard server log.   

	Read the full documentation or learn more. 


	CONNECTION DATA: If you allow a website to send you notifications, Firefox connects with Mozilla and uses your IP address to relay the message. Mozilla cannot access the content of messages.   

	INTERACTION DATA: We receive aggregate data such as the number of Firefox subscriptions and unsubscriptions to website notifications, number of messages sent, timestamps, and senders (which may include specific website providers).   

	Read the full documentation or learn more, including how to revoke website notifications. 


	You can install Add-ons from (“AMO”) or from the Firefox Add-ons Manager, which is accessible from the Firefox menu button in the toolbar.

	SEARCH QUERIES: Search queries in the Add-on Manager are sent to Mozilla to provide you with suggested Add-ons.   

	INTERACTION DATA: We receive aggregate data about visits to the AMO website and the Add-ons Manager in Firefox, as well as interactions with content on those pages. Read about data practices on Mozilla websites.  

	TECHNICAL DATA FOR UPDATES: Firefox periodically connects with Mozilla to install updates to Add-ons. Your installed Add-ons, Firefox version, language, and device operating system are used to apply the correct updates.   


	Read	This privacy notice is for the full documentation heremost recent general release version of Firefox distributed by Mozilla. If you obtain Firefox elsewhere, or delete allare running an older version, your screenshots here.  copy of Firefox may contain different privacy characteristics.

	Except as noted otherwise, this privacy notice is for the most recent general release	Mozilla’s pre-release versions of Firefox. Our pre-release versions (Beta/Developer Edition,Firefox (which are distributed through channels such as Nightly, Beta, TestFlight and TestFlight)BuddyBuild) are still under active development and may contain new features or have different privacy characteristics Pre-release versions automatically send Telemetry data to Mozilla to help us improve Firefox.characteristics.

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