Meta and Yandex are de-anonymizing Android users’ web browsing identifiers (arstechnica.com)

submitted 19 hours ago by tad_lispy@europe.pub to c/esc@europe.pub

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cross-posted from: https://lemm.ee/post/67100400

Tracking code that Meta [USA based owners of Facebook, Instagram, WhatsApp etc. - Tad] and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.

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this post was submitted on 27 Jun 2025

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