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Comment by WalterGR

5 years ago

I didn’t know what you meant, so for others equally confused, this is a decent article:

https://www.theregister.com/2021/02/24/dns_cname_tracking/

I don't understand the hate for this trick. It still breaks cross-site user tracking. It's just sort of a hack around installing a hypothetical Google Analytics app on-prem or pumping in data via a server-to-server integration.

Google Analytics can't cross-reference data from other sites on the browser, b/c it's not a third party cookie now... what's the problem?

Work is ongoing on that front too: ttps://webkit.org/blog/8146/protecting-against-hsts-abuse/