Mozilla Research Reveals Stardust Period Tracker Shares User Health Data with Analytics Firm

Mozilla research found that period tracker Stardust shares users' sensitive health data with analytics firm RudderStack, including birthdate, birth control type, and symptoms, despite claims of data privacy. The study highlights significant privacy risks in health apps, contrasting Stardust with Euki, which was deemed 'squeaky clean' for not sharing data with third parties.

One period tracker app tested by Mozilla was 'squeaky clean,' while another app was seen sharing users' health data with an analytics company, underscoring vast differences in user privacy among these apps.

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