Intelligent Tracking Prevention in iOS 11 and High Sierra Causing Ad Firms Revenue to Decline<img style="float: left; margin-right: 10px" src="
![](http://www.iphonehacks.com/wp-content/uploads/2017/07/Safari-iPhone-194x129.jpg)
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With iOS 11 and macOS High Sierra, Apple introduced Intelligent Tracking Prevention feature in Safari which prevents ads from tracking a user’s behavior on the web. With iOS 11 now running on millions of devices and users upgrading to macOS High Sierra, ad firms have started seeing a decline in their ad revenues.
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Intelligent Tracking Prevention in iOS 11 and High Sierra Causing Ad Firms Revenue to Decline