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Paid media, ad tech and the auction

Programmatic & TV

Apple Has Far-Reaching Plans To Block Hundreds Of Programmatic Data Companies From iOS

Apple's iOS 27 update has quietly blocked hundreds of programmatic data companies from collecting data or serving ads on Safari, signaling a far-reaching shift in the company's privacy mandate. This move, which affects a dynamic list of companies stored in a private GitHub repository, could have significant implications for the ad tech and data management landscape, potentially leading to broader category-wide bans on CDPs, DMPs, DSPs, and other three-letter acronyms.

Original reporting · adexchanger.com

Read “Apple Has Far-Reaching Plans To Block Hundreds Of Programmatic Data Companies From iOS” at AdExchanger →

How this was written. Adtomix 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 update blocks hundreds of programmatic data companies from collecting data or serving ads on Safari
  • The list of blocked companies is now dynamic and stored in a private GitHub repo, accessible only to Apple engineers
  • Apple's new blocking process relies on a remote list that can be updated on the fly, without requiring a new iOS version
  • The original list of blocked companies (TTD, LiveRamp, ID5, etc.) remains blocked, but the new list suggests broader category-wide bans

From the source

Oh, what a tangled WebKit we weave. Earlier this week, AdExchanger reported that Apple’s iOS 27 update from two weeks ago quietly blocked a handful of programmatic data players – including The Trade Desk and its Unified ID 2.0 initiative, LiveRamp, ID5…

— AdExchanger
Read the full story at AdExchanger More from Saturday, October 3, 2026’s edition