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Apple’s Latest Privacy Move In iOS 27 Hits Different Than ATT

Apple's latest iOS 27 update introduces a new privacy feature that differs significantly from the AppTrackingTransparency (ATT) framework, creating unique challenges for the ad tech industry.

Original reporting · adexchanger.com

Read “Apple’s Latest Privacy Move In iOS 27 Hits Different Than ATT” at AdExchanger →

How this was written. 1to1 wrote this article with a language model from AdExchanger’s reporting (model: @cf/ibm-granite/granite-4.0-h-micro); it describes that reporting rather than adding to it. The original, linked above, is the full story.

Key points from AdExchanger’s report

  • Apple's iOS 27 blocks adsrvr.org and other ad tech domains in Safari for users with the update
  • The move limits ad delivery for companies like The Trade Desk, LiveRamp, ID5, Permutive, and Audigent
  • The asymmetry in ad serving between Google and Apple raises competitive concerns

From the source

Editor’s note: After this column published, AdExchanger reported that Apple’s WebKit blocklist has expanded well beyond the initial handful of companies — potentially to hundreds of ad tech, martech and data vendors. Read more. When Apple’s…

— AdExchanger
Read the full story at AdExchanger More from Sunday, October 4, 2026’s edition