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We have mixed feelings about this. Most people could probably figure out that google.com and google.co.uk are owned by the same entity. And probably many people
by om2 7y ago
We have mixed feelings about this. Most people could probably figure out that google.com and google.co.uk are owned by the same entity. And probably many people are aware that youtube.com and google.com are related. But some entities own hundreds of domain names with no clear lexical relationship. I doubt a lot of people would expect TechCrunch.com and huffpost.com to be related and would not really expect to be tracked between the two. So common ownership might not be enough to give users a reasonable expectation of a cross-site relationship.
- tuxone 7y agoAlso, a tracking service could just ask to be CNAMEd to a random subdomain and become everybody’s “first party”, couldn’t it?
- lmkg 7y agoThis has been a feature of Adobe Analytics for over a decade. Google Analytics doesn't currently offer this as a feature, but some enterprising individuals have explored how to hack it in after ITP 2.1 was announced.
- om2 7y agoIt could, but access through these various CNAMEs would not give it stateful cross-site tracking ability, since each would be a different Origin. It would be providing a hosted first-party analytics/ads/whatever service within the storage space of the first party.
- randall 7y agoAdditionally, people who own the sites can use them together via methods like this, while third parties will have a more difficult time. Bravo.
- specialist 7y ago"We have mixed feelings about this." No need. Anyone choosing to mix and match also has the resources for some minor duplication of effort. Or they could just do it all service side.