iRhythm Holdings Data Breach Investigation: Edelson Lechtzin LLP Probes Class Action Claims After Patient Data Is Exposed

iRhythm Holdings, a San Francisco-based heart-monitoring company, suffered a data breach in June 2026 affecting approximately 8 million patients. Unauthorized access to third-party business applications exposed sensitive patient information including names, contact details, insurance numbers, and device serial numbers. The company disclosed the incident to the SEC and began notifying affected individuals in October 2026. A national class action law firm is investigating potential claims for compensation.