We (WebKit team) know of major ad platforms that use cookies as their preferred mechanism to track clicks, in part so that a tracking pixel can work without req

We (WebKit team) know of major ad platforms that use cookies as their preferred mechanism to track clicks, in part so that a tracking pixel can work without requiring the merchant landing and conversion pages to include script. We are also aware of tracking via link decoration (not just for ads) and our first steps at defending against it are described here: https://webkit.org/blog/8828/intelligent-tracking-prevention-2-2/ https://webkit.org/blog/8828/intelligent-tracking-prevention...