Firefox Personalization Study

Privacy Policy

Mozilla Personalization Study - Privacy Notice
Date: November 14, 2013

We care about user privacy. When Mozilla (that's us) collects information about participants of the Mozilla Personalization Study ("Study Participants" and "Study"), this Privacy Notice describes how we handle that information.
  1. Scope of Study. Mozilla is considering a web personalization feature for Firefox that puts users in control of what data is shared and with whom. This Study analyzes user engagement with personalized content, non-personalized content, and browser history to help us determine which personalization methods, if any, are most engaging to Firefox users.
  2. Term/Termination. Study Participants must install the User Personalization Study Add-on ("Research Add-on") to Firefox web browser ("Firefox"). You may uninstall the Research Add-on at any time. Otherwise, the Research Add-on will receive periodic testing updates from Mozilla and will uninstall itself no later than 6 months from initial installation. Testing updates may include new phases of the Study, such as new algorithms, surveys, and prompts.
  3. Automatic Data Collection. The following data may be automatically collected from Study Participants with an installed Research Add-on: (1) interests of users based on Pre-Study browsing history, for example, sports, finance, and other topics ("<span class="text-underline">Interest(s)</span>"); frequency of access to websites in each Interest; (3) engagement metrics on certain content accessed by STudy Participants, including but not limited to, click rates, bounce rates, time spent and top-level domains visited (such as .com, .org,; (4) metrics on user engagement with Mozilla's prompts; and (5) certain user-agent information, such as browser language and cookie preferences. Your data is connected to an anonymous ID and cannot be used to personally identify you.
  4. Optional Data Collection: Surveys. You may be asked to respond to optional surveys, the responses of which will be analyzed in an aggregated format ("Survey Data") Survey Data may include your demographics, interests, computer usage, and browsing habits. Survey Data cannot be used to personally identify you. Mozilla may correlate the Survey Data with other data, but will do so in a manner that cannot be used to personally identify you.
  5. Optional Data Collection: Interests & Personalized Content. Certain websites are participating in this Study to display personalized content to you through the Research Add-on. You may be prompted by Firefox to share your Interests with these websites, or to edit a website "whitelist" to allow certain websites to access your Interests to display personalized content. Unless you expressly consent, these websites will not have access to your Interests by default. Websites cannot use your Interest data to personally identify you.
  6. Data Sharing and Retention. Your data will be retained by Mozilla for the period necessary to fulfill the purpose of this Study. Your Interest data may be shared with websites participating in this Study, in accordance with Section 5. Such websites will no longer have access to your Interest data when the Research Add-on is uninstalled.
  7. Data Protection.
    1. Mozilla's use of your data will be in accordance with this Privacy Notice and the Mozilla Privacy Policy below.
    2. Mozilla uses a third party,, for its tests, which has its own privacy policy. SurveyGizmo states that they will not share this information with others or use the information for purposes other than to maintain the services they provide to Mozilla
    3. Firefox will prompt you for your consent when a website participating in this Study seeks access to your Interest data. Participating websites may employ web analytics software to monitor general website engagement, as further described in their privacy policies.

Mozilla Privacy Policy

Your privacy is an important factor that the Mozilla Corporation, located at 650 Castro St #300, Mountain View, CA 94041 ("Mozilla") (that's us) considers in the development of each of our products and services. We are committed to being transparent and open and want you to know how we receive information about you, and what we do with that information once we have it.

What do we mean by "personal information"?
For us, "personal information" means information which identifies you, like your name or email address.
Any information that falls outside of this is "non-personal information"
If we store your personal information with information that is non-personal, we will consider the combination as personal information. If we remove all personal information from a set of data then the remaining is non-personal information.

How do we learn information about you?
We learn information about you when:
  • you give it to us directly (e.g., when you choose to send us crash reports from Firefox);
  • we collect it automatically through our products and services (e.g., when we check whether your version of Firefox is up to date);
  • someone else tells us information about you (e.g., Thunderbird works with your email providers to set up your account); or
  • when we try and understand more about you based on information you've given to us (e.g., when we use your IP address to customize language for some of our services).

What do we do with your information once we have it?
When you give us personal information, we will use it in the ways for which you"ve given us permission. Generally, we use your information to help us provide and improve our products and services for you.

When do we share your information with others?
  • When we have gotten your permission to share it.
  • For processing or providing products and services to you, but only if those entities receiving your information are contractually obligated to handle the data in ways that are approved by Mozilla.
  • When we are fulfilling our mission of being open. We sometimes release information to make our products better and foster an open web, but when we do so, we will remove your personal information and try to disclose it in a way that minimizes the risk of you being re-identified.
  • When the law requires it. We follow the law whenever we receive requests about you from a government or related to a lawsuit. We'll notify you when we're asked to hand over your personal information in this way unless we're legally prohibited from doing so. When we receive requests like this, we'll only release your personal information if we have a good faith belief that the law requires us to do so. Nothing in this policy is intended to limit any legal defenses or objections that you may have to a third party's request to disclose your information.
  • When we believe it is necessary to prevent harm to you or someone else. We will only share your information in this way if we have a good faith belief that it is reasonably necessary to protect the rights, property or safety of you, our other users, Mozilla or the public.
  • If our organizational structure or status changes (if we undergo a restructuring, are acquired, or go bankrupt) we may pass your information to a successor or affiliate.
How do we store and protect your personal information?
We are committed to protecting your personal information once we have it. We implement physical, business and technical security measures. Despite our efforts, if we learn of a security breach, we'll notify you so that you can take appropriate protective steps.
We also don't want your personal information for any longer than we need it, so we only keep it long enough to do what we collected it for. Once we don't need it, we take steps to destroy it unless we are required by law to keep it longer.

What else do we want you to know?
We're a global organization and our computers are in several different places around the world. We also use service providers whose computers may also be in various countries. This means that your information might end up on one of those computers in another country, and that country may have a different level of data protection regulation than yours. By giving us information, you consent to this kind of transfer of your information. No matter what country your information is in, we comply with applicable law and will also abide by the commitments we make in this privacy policy.

If you are under 13, we don't want your personal information, and you must not provide it to us. If you are a parent and believe that your child who is under 13 has provided us with personal information, please contact us to have your child's information removed.

What if we change this policy?
We may need to change this policy and when we do, we'll notify you.

Contact Us
If you want to make a correction to your information, or you have any questions about our privacy policies, please get in touch with:

Mozilla Corporation
Attn: Legal Notices - Privacy
650 Castro Street, Suite 300
Mountain View, CA 94041-2072
Phone: +1-650-903-0800

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