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Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox Privacy Notice

Data Privacy Principles

The following five principles stem from the Mozilla Manifesto and inform how we:

  • develop our products and services
  • manage user data we collect
  • select and interact with partners
  • shape our public policy and advocacy work
  1. No surprises

    Use and share information in a way that is transparent and benefits the user.

  2. User control

    Develop products and advocate for best practices that put users in control of their data and online experiences.

  3. Limited data

    Collect what we need, de-identify where we can and delete when no longer necessary.

  4. Sensible settings

    Design for a thoughtful balance of safety and user experience.

  5. Defense in depth

    Maintain multi-layered security controls and practices, many of which are publicly verifiable.