Users of Facebook’s iOS app are suing Meta for allegedly collecting their data even after they opted out of it using a privacy feature Apple introduced in April 2021. Two iOS users of Facebook filed a class-action lawsuit on Wednesday in a San Francisco federal court, the second-such class action lawsuit against Meta in one week.
According to allegations in the class-action lawsuit, Meta bypassed the privacy-preserving capabilities of App Tracking Transparency (ATT), such as eliminating cross-host tracking on iOS, by setting up alternative tracking methods on third-party websites through in-app browser applications.
When released with iOS 14.5, ATT had an opt-out (from tracking) rate of 98% in the U.S., i.e., only 2% of the U.S. users allowed apps to track them. As of May 2022, the number of U.S. users that have enabled app tracking (opt-in rate) on iPhones is up to 18%. Similarly, the global opt-in rate for tracking on iOS increased from 11% in April 2021 to 25% in May 2022.