Mozilla

A free software with products including the Firefox web browser, and more.

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Last Updated: May 4, 2019

Mozilla is the company the produces the Firefox web browser. They collect some personal data from you when you use their services and products.

Personal data collected

Mozilla collects information from your use of Firefox, for example any open tabs and windows, webpages visited, how many Firefox add-ons you have and which ones they are, what internet searches you do, and session length. Firefox also shares what version and language it is in, hardware information, operating system, memory, information on any errors or crashes, and information about updates, activation, and Google’s SafeBrowsing service. Temporarily your IP address is stored when Firefox sends data to Mozilla. When clicking on a Snippet link, they receive information about the link you followed. Mozilla does not receive information on your browsing history, but they get data on the Pocket Recommendations you have seen and clicked. Mozilla also collects data from you if you interact with them on social media, submit a job application, volunteer as a community member, submit feedback or a request, sign up for an account, and interact with a product.

Personal data usage

Mozilla uses data to:

  • Set your default search provider based off of your location information.
  • Suggest content relevant to your interests.
  • Send you Add-on Recommendations.
  • Suggest Top Sites for new Firefox users.
  • Suggest Pocket Recommendations.
  • Recommend Firefox Features.
  • Improve security for everyone.
  • Check for browser updates.
  • Protect you from malicious add-ons.
  • Protect you from malicious downloads.
  • Validate an https link’s certificate.
  • Receive reports on crashes if you consent to it.
  • Research their marketing efforts.
  • Show relevant advertisements.
  • Communicate with you.
  • Send you marketing emails.

Cookies and similar tech

Mozilla uses cookies and similar technologies to track what you are doing. If you decide to opt out of cookies, some of Firefox’s features may not work. Mozilla does not support the Do Not Track function.

Mozilla account

Having a Firefox account allows you to send tabs across devices, use lockbox to remember passwords (Apple), sync your bookmarks, use Pocket to listen to articles, and sync your notes (Android).

Data shared with Mozilla

NAME
CATEGORY
MANDATORY
User ID
App Information
OPTIONAL
Username
App Information
OPTIONAL
Types of content you view
App Information
YES
Types of content you engage with
App Information
YES
People you are connected to
App Information
—
IP address
Device
OPTIONAL
Language and time zone
Device
YES
Browser type
Device
YES
Name of your mobile operator or ISP
Device
YES
Device locations
Device
YES
Device identifiers
Device
YES
Device settings
Device
YES
Hardware version
Device
YES
Signal strength
Device
—
Operating system
Device
YES
Battery strength
Device
—
Billing details
Payment
—
Shipping and contact details
Payment
—
Credit or debit card number
Payment
—
Gender
Personal Information
—
Name
Personal Information
—
Information provided by third-party entity
Third-party
YES
Message sent to you
Third-party
—
Login time
Time
—
Sign-up time
Time
—
Duration of your activities
Time
YES
Frequency of your activities
Time
YES

How to protect your privacy

Mozilla gives you options within Firefox when it comes to your privacy. You can:

  • Opt out of Firefox sending data from their installer.
  • Opt out of Firefox sending technical data about your browser.
  • Opt out of cookies.
  • Unsubscribe to their emails.
  • Install the Google Analytics Opt-out Browser Add-on to Firefox so you can stay anonymous.
  • Do not download or install Firefox.

How to contact Mozilla about your privacy

You can contact Mozilla through email or postal mail:

Mozilla Corporation
Attn: Legal Notices – Privacy
331 E. Evelyn Ave,
Mountain View, CA 94041