Remove GA4's cross-domain measurement query parameter #33188
Labels
OS/Android
Fixes related to Android browser functionality
OS/Desktop
priority/P4
Planned work. We expect to get to it "soon".
privacy/query-filter
QA Pass - Android ARM
QA Pass-macOS
QA/Yes
release-notes/include
Milestone
Google Analytics 4 uses the
_gl
query string parameter in order to sync first-party cookies across different domains owned by the same entity: https://support.google.com/analytics/answer/10071811These first party cookies include unique identifiers such as client IDs and session IDs: https://www.youtube.com/watch?v=LA2dPVj5y4Y
Therefore this is cross-site user tracking and so it's in scope for our query string filter.
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