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WebKit targets identity resolution by blocking tracking infrastructure

webkit.org 3 min read Editor score 6/10

The excerpt describes how third parties link collected email addresses to persistent tracking IDs after cross-site cookies are blocked. The approach shows how browser privacy defenses are adapting to post-cookie tracking.

What
Identity resolution is a post-cookie tracking method in which third parties collect email addresses and return opaque tracking IDs to webpages.
How
Those IDs remain linked to email addresses and can support identity graphs and cross-site or cross-device tracking; logging out does not remove them.
Why it matters
For engineers, the example shows how third-party network infrastructure can sustain tracking even after browsers block cross-site cookies.
email address email address tracking ID collected data webpage third parties servers identity graph
Identity resolution sends email data through third-party infrastructure and returns a tracking ID to a webpage. Sketched from the article's own text.

Read on webkit.org →

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