iRhythm Holdings Discloses Cybersecurity Incident and Data Breach
iRhythm Holdings, a heart monitoring device manufacturer, identified unauthorized access to certain third-party-hosted business applications, leading to the exfiltration of sensitive patient and proprietary data. The company received an extortion demand from a threat actor.
Irhythmtech
- Domain
- irhythmtech.com
- Sector
- Health Care and Social Assistance
- Signals
- 1 linked
Signal context
First seen: Jun 8, 2026
Last updated: Jun 19, 2026
Status: Public signal
Key points
- Unauthorized access detected on June 8, 2026.
- Threat actor claimed exfiltration of proprietary data, patient protected health information, and other personal information on June 9, 2026.
- Incident attributed to a social engineering attack.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Health Care and Social Assistance
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data
- 6 signals in the same sector
- 22 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
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