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Firefox

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Source-backed from Firefox Privacy Notice

80
reviewed findings
15
key findings
3
free to read here
20
verified controls

2 of them depend on where you live.

Privacy Snapshot

What the published policy covers, and how much we found under each. Tap one to read it.

  • Location 2 findings
  • Tracking 3 findings
  • Advertising & Profiling 8 findings
  • Sharing 12 findings
  • Controls & Permissions 32 findings
  • Other 23 findings

3 findings, in full

The first 3 of this report’s 15 key findings, complete — claim, reasoning, and the policy’s own wording.

Sharing Firefox New Tab interaction data may be shared with advertising partners, aggregated or de-identified

What this means

Mozilla says it collects technical and interaction data, such as views and clicks on New Tab content or ads, and that this data may be shared with its advertising partners on an aggregated and/or de-identified basis.

New Tab technical and interaction data may be shared with Mozilla's advertising partners on an aggregated and/or de-identified basis.

Why this matters

How you interact with New Tab content and ads may reach advertisers, in aggregated or de-identified form.

What the policy says

Mozilla collects technical and interaction data, such as the position, size, views and clicks on New Tab content or ads, to understand how people are interacting with our content and to personalize future content, including sponsored content. This data may be shared with our advertising partners on an aggregated and/or de-identified basis.

From Firefox Privacy Notice

Source captured on

What you can do

A privacy control may reduce part of this practice.

Plainlyst Premium shows where to find it, what it changes, what it doesn’t change, and what may stop working.

View in Privacy Tune-Up
Other Privacy control available On desktop and Android, Firefox crash reports you choose to send may include open sites

What this means

Mozilla says that on desktop and Android, if Firefox encounters an unexpected issue, the Mozilla Crash Reporter asks if you wish to send additional information, which may include sites that were open at the time of the crash and other browsing data.

On desktop and Android, if Firefox encounters an unexpected issue, the Mozilla Crash Reporter asks whether to send additional information, which may include sites open at the time of the crash and other browsing data.

Why this matters

Agreeing to send a crash report may also send Mozilla some of the sites you had open.

What the policy says

On desktop and Android, if Firefox encounters an unexpected issue, the Mozilla Crash Reporter will also ask if you wish to send us additional information, which may include sites that were open at the time of the crash and other browsing data. On Desktop and Android if you opt in to sending us crash reports automatically, we collect this information without prompting you each time; on iOS, crash reports contain less information and are sent automatically to us by default.

From Firefox Privacy Notice

Source captured on

What you can do

A verified privacy control can reduce this.

Plainlyst Premium shows where to find it, what it changes, what it doesn’t change, and what may stop working.

View in Privacy Tune-Up
Advertising & Profiling Privacy control available For Firefox sponsored content, Mozilla may share device type, IP-derived location and content category

What this means

Mozilla says it works with advertising providers to deliver sponsored content in Firefox using programmatic technologies, and to support this it may share limited, non-identifying information, such as device type, IP-derived location information and category of content viewed, to help determine which ads to display.

To deliver sponsored content through programmatic advertising providers, Mozilla may share limited, non-identifying information such as device type, IP-derived location and category of content viewed.

Why this matters

Your approximate location and the kind of content you view in Firefox may help outside ad providers pick the sponsored content you see.

What the policy says

We also work with advertising providers to deliver relevant sponsored content using programmatic technologies. To support this, we may share limited, non-identifying information — such as device type, IP-derived location information, and category of content viewed — to help determine which ads to display. We don’t share any information that identifies you.

From Firefox Privacy Notice

Source captured on

What you can do

A verified privacy control can reduce this.

Plainlyst Premium shows where to find it, what it changes, what it doesn’t change, and what may stop working.

View in Privacy Tune-Up

12 more key findings a free account opens, by topic

  • Controls & Permissions 5
  • Advertising & Profiling 3
  • Tracking 2
  • Location 1
  • Sharing 1

Create a free account to read all 15

And every key finding for every company you use, with your companies saved and a dashboard of what is worth seeing across them, plus your Privacy Tune-Up. An email and a password — no card.

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Unlock the complete Firefox report

A free account opens all 15 key findings. 65 additional reviewed findings are available in the complete report.

  • Location 1 more
  • Tracking 1 more
  • Advertising & Profiling 4 more
  • Sharing 10 more
  • Controls & Permissions 27 more
  • Other 22 more

  • Complete report

    65 additional reviewed findings, each shown with the policy wording behind it, like the 15 above.

  • Privacy Tune-Up

    20 verified privacy controls, 3 of them high-impact — where each one is, what it changes, and what may stop working.

  • Stay protectedPlanned

    Told when the policy changes.

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Plainlyst simplifies selected disclosures from privacy policies. It does not claim to capture every statement or practice in a policy, and it is not legal advice.

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Official sources only. Every finding quotes the company’s own policy, and every record names the document behind it. We do not grade anybody.