The Electronic Frontier Foundation said most major smart wearable vendors still provide weak privacy protections and limited transparency for sensitive health data collected by consumer devices. In a review of 10 wearable makers, including Apple, Google/Fitbit, Garmin, Oura, Polar, Suunto, and Whoop, EFF found that many companies rely on encryption only in transit and at rest, leaving providers able to access user information such as health metrics, sleep patterns, movement, and location data.
EFF reported that only Apple and Google publish transparency reports, while Apple was the only vendor identified as offering end-to-end encryption for health data stored in its Health app. The findings come as wearable data faces growing scrutiny because it can be requested by law enforcement, underscored by Apple's published U.S. law-enforcement guidelines that describe how the company handles legal demands for customer information.

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A Security Affairs report summarized an Electronic Frontier Foundation review of ten major smart wearable vendors and said most still provide weak privacy protections and limited transparency around health data handling. The review noted that only Apple and Google publish transparency reports, and only Apple offers end-to-end encryption for health data stored in its Health app.
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