I read this tweet https://twitter.com/arkonisus/status/847718209503477761 showing the number of trackers blocked by Ghostery for a certain site. Then I got curious and opened that specific page in Safari on my Mac trying to compare the blocked lists. There I get only three blocked assets.
But if I take a closer look at the source code I already see those:
So I wonder if trackers are already able to track visitors of a particular page by those preconnects and or dns-prefetches? Cuz most of the listed trackers in the second screenshot are also in Betters curated list. But just based on the blocks from the console shown in the first screenshot I would assume quite a few are missing and are just passed through? Running Better 2017.1 on MacOS 10.11.6 and Safari 10.1. Cheers r.