As advertised by Apple. The company introduced a feature called “App tracking transparency”, that defaults to “do not allow tracking” as of version 14.5, that was released earlier this year. The feature allows device-owners to control which apps can track user behaviour across multiple websites.
Reality is more complex, as always, but it’s still a great ad.
Google’s Project Zero drops a hand full of Zero Day vulnerabilities for the iPhone at Black Hat 2019. Apparently one of them isn’t patched yet. Interaction-less Attack Surface in this context means, it’s wormable, executing code with no human interaction.