Opened 15 months ago

Last modified 6 months ago

#26606 new defect

investigate fingerprinting and linkability risks of the Intersection Observer API — at Initial Version

Reported by: mcs Owned by: tbb-team
Priority: High Milestone:
Component: Applications/Tor Browser Version:
Severity: Normal Keywords: tbb-fingerprinting, tbb-linkability, ff60-esr, TorBrowserTeam201904
Cc: arthuredelstein Actual Points:
Parent ID: Points:
Reviewer: Sponsor:

Description

​Support the Intersection Observer API was added was added during the ESR60 development cycle. This API "provides a way to asynchronously observe changes in the intersection of a target element with an ancestor element or with a top-level document's viewport." and may add linkability or fingerprinting risks. See:

https://bugzilla.mozilla.org/show_bug.cgi?id=1321865
https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API

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