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Disabling Firefox’s “privacy-preserving ad measurement” by default or before upgrading to Firefox 128
(including Firefox ESR 128) introduces what Mozilla terms privacy-preserving ad measurement, also referred to as privacy-preserving attribution or PPA because nothing serious computer-related is complete without a Three Letter Acronym (also known as TLA). They do publish information on how to disable it manually through the user interface after upgrading or after starting the browser with a new profile for the first time (it’s Settings > Privacy & Security > Website Advertising Preferences > Allow websites to perform privacy-preserving ad measurement; apparently it’s turned on by default), but in some situations you may want to disable it even before upgrading, or by default in new browser profiles.
They do publish information on how to disable it manually through the user interface after upgrading or after starting the browser with a new profile for the first time (it’s Settings > Privacy & Security > Website Advertising Preferences > Allow websites to perform privacy-preserving ad measurement; apparently it’s turned on by default), but in some situations you may want to disable it even before upgrading, or by default in new browser profiles. With a tip of the proverbial hat to the Tor project, to disable it ahead of time in an existing browser profile: go into about:config, add a new preference of type boolean with the name dom.private-attribution.submission.enabled, and set its value to false. Correspondingly, if you want to disable it by default, the proper user.js (or similar file, such as one in Debian’s/etc/firefox-esr directory) incantation would be:
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