iRhythm Data Breach Affects 8.2 Million People

Medical device maker iRhythm, known for its Zio wearable ECG monitor, disclosed that a June 2026 breach affected 8,179,772 individuals, according to the HHS breach portal. Hackers stole names, addresses, birth dates, contact details, account and insurance numbers, and device data, and attempted to extort a ransom.

• HHS portal lists 8,179,772 people affected in the iRhythm breach
• Stolen data includes names, addresses, birth dates and insurance numbers
• Hackers demanded a ransom and threatened to leak the data
• iRhythm says no impact found on devices or clinical systems