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# Apple’s Safari update breaks identity resolution vendors, researcher says
- URL: https://www.medianexis.com/apples-safari-update-breaks-identity-resolution-vendors-researcher-says/
- Published: 2026-10-27T14:24:54.000Z
- Updated: 2026-10-27T14:24:54.000Z
- Description: AdExchanger’s Sarah Sluis reports that Apple confirmed in a blog post it has broken identity resolution companies’ ability to track users on Safari, closing workarounds like short-lived cookies and CNAME cloaking that ad tech used to triangulate identity.
- Author: The Signals Desk
- Tags: Ad-tech, Sarah Sluis, AdExchanger: identity resolution post-cookie shift

**Why it matters.** Identity vendors relying on browser-based workarounds lose the ability to resolve Safari users, pushing ad tech toward consent-based first-party identity schemes.

*Signal from* [*adexchanger.com*](https://adexchanger.com/?ref=medianexis.com) *·* [*Sarah Sluis*](https://www.medianexis.com/tag/by-sarah-sluis/) *·* [*read the original*](https://www.adexchanger.com/the-big-story/identity-resolution-goes-the-way-of-the-cookie/?ref=medianexis.com)*.*