iRhythm Technologies breach exposes data of 8.2 million patients after social-engineering attack on third-party platform
iRhythm Technologies, maker of the Zio wearable ECG monitor, has had a June 2026 data breach confirmed at roughly 8.18 million individuals, according to the Oregon Attorney General breach list. This is close to its entire customer base of about 8 million patients in the US and Europe. The company first identified unauthorized access on Ju…