Kaiser Permanente Notifying 13.4 Million of Tracker Breach

Incident Involves Health Plans' Prior Use of Online Tech in Websites, Mobile Apps
Kaiser Foundation Health Plan has reported to regulators a health data breach affecting 13.4 million people stemming from the previous use of web trackers. Aside from reports expected from the Change Healthcare mega hack, the incident is the largest health data breach reported so far in 2024.

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