Meta and Yandex have been found guilty of secretly listening to localhost ports and transferring sensitive data from Android devices.

Meta and Yandex exploited an Android loophole to secretly track users' web history. Google and Firefox are now investigating a major privacy breach.

Meta and Yandex are de-anonymizing Android users’ web browsing identifiers Abuse allows Meta and Yandex to attach persistent identifiers to detailed browsing histories.

Meta has only recently paused a tracking method that linked Android users' web browsing activity to their Facebook and Instagram profiles, even when users browsed in incognito mode or used a VPN.

Meta and Yandex secretly bypassed Android privacy protections to track user activity via embedded website code, linking web data to app identities even in private mode.