Apple threw a wrench into the digital ad industry, and marketers are bracing for impact
Source: Business Insider ·
Apple is once again cracking down on the tools the ad industry uses to measure and target ads. This time, it gave no warning.
From the source
A new software update from John Ternus' Apple has the adtech world in a fluster.Bloomberg/Getty ImagesA version of this post appears in the CMO Insider newsletter.Sign up for Business Insider's weekly marketing newsletter.Apple has its finger on the big red button again.The adtech sector was up in arms this week about a new Apple update within iOS 27 with the potential to wreak havoc on web advertising.Apple's change blocked several major adtech firms from using advertising identifiers across browsers on its devices and, in some cases, also disrupted their ability to serve ads to Apple users on the web.First reported by AdExchanger, the blocking happened through WebKit, the technology that powers Safari and all other browsers that run on iPhones.Apple has long held an anti-tracking stance, doubling down on its principle that privacy is "a fundamental human right."What particularly irked the adtech industry was that Apple didn't just restrict cookies or identifiers this time — it…