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Comment by tyingq | Hacker News Reader

Google analytics does use first party cookies for the site stats, but it also s̶e̶t̶s̶ [edit] can set a third party DoubleClick cookie that tracks users across sites. So that anonymizing the IP doesn't anonymize the user.

There's also optional functionality that can track users via the first party cookie. Passing login id, for example, to GA.

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    it also sets a third party DoubleClick cookie

I have never witnessed that. Can you link to a site that uses only Google Analytics where that happens?

Maybe you confused Analytics and Adsense?

"For customers that are using Google Analytics' Display Advertiser features, such as remarketing, a third-party DoubleClick cookie is used in addition to the other cookies"

So, I suppose I should have said "can set", though remarketing is very common.

https://developers.google.com/analytics/devguides/collection...

I would think that enabling the "Display advertisers features" only makes sense for webmasters who also use Google Adsense. And then their visitors get bombarded with all kinds of cookies anyhow. So I don't think it applies to the use case at hand. Where a webmaster wants to implement statistics without violating GDPR.

It's used for Adwords. That doesn't change anything on your site. You can remarket only on Google searches, for example...no AdSense involved.

It’s not a double click cookie, but if you have multiple sites under the same analytics account google will be able to track cross site sessions via a cookie they set to their own domain.

Not in a default configuration

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