iRhythm reports patient-data breach and updates financial guidance

iRhythm Holdings reported unauthorized access to certain patient data and submitted regulatory disclosures about the breach, Yahoo Finance reports. The company also updated its operational and financial guidance in response to the incident. Management is working with law enforcement and external cybersecurity specialists to assess the scope of the breach and remediation steps. iRhythm develops and commercializes devices for ambulatory cardiac monitoring, placing the incident within a business that handles regulated health data and provides remote diagnostic services. The investigation remains underway.