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Firefox sends various data back to Mozilla. This data keeps the browser up to date, powers various features, provides user support, and helps improve the product itself. This page documents the policy for how and why we add new data collection metrics. The owner and peers of the Firefox Data Collection policy module are responsible for making decisions about data collection systems and measurements.
Owner: [https://mozillians.org/en-US/u/bsmedberg/ Benjamin Smedberg] (:bsmedberg)
Peers: [https://mozillians.org/en-US/u/vladan/ Vladan Djeric] (:vladan), [https://mozillians.org/en-US/u/ally/ Ally Naagktgeboren]
== Data Collection Properties ==
* Does the data conform to the existing Mozilla [https://www.mozilla.org/en-US/privacy/principles/ privacy principles], the [https://www.mozilla.org/en-US/privacy/ Mozilla Privacy Policy], and the [https://www.mozilla.org/en-US/privacy/firefox/ Firefox privacy notice]?
* Does this data collection represent any unusual privacy or legal risk to users or Mozilla?
== Requirements ==
* Data collection details must be documented using the in-tree histogram definitions or the in-tree documentation system (.rst files).
* New data collection or changes to data collection must be approved by the module owner or peers by requesting review on the patch which updates the in-tree documentation.
== Requesting Approval ==
It is our intention to review every new data collection within Firefox, but to do so quickly and with minimal overhead. For every new measurement, even a simple new Telemetry probe, please request approval by setting the NEEDINFO flag for the module owner or a peer. Simple requests should be handled within a day.
More complex requests, and especially requests which add a new kind of data collection mechanism or require changes to the privacy notice, will require more extensive review. Please consider pinging the team about these as they are being designed! Additional review may include:
* Data review: In cases where data analysis and quality is uncertain, the module owner will request additional feedback from the Mozilla metrics team and other experts to validate data analysis plans.
* UX review: We may request/require feedback from the Firefox UX team on any proposed privacy/data-control UI.
== Other Practices ==
Every year, the data collection owner and peers will survey all of the existing data collection systems with Firefox. This survey has the following goals:
* To ensure that it is still necessary and useful to collect a piece of data.
* To re-identify who is responsible for the collection, monitoring, and reporting of collected data.
