INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

HHS Filing Reveals iRhythm Data Breach Affected Approximately 8.2 Million

| 2026-10-29 08:27 CRITICAL HIGH DATA BREACH
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Executive Summary
AI-generated
In June 2026, medical equipment provider iRhythm experienced a data breach affecting over 8.2 million individuals in the United States, with sensitive information including names, addresses, dates of birth, email addresses, phone numbers, and account and device data potentially compromised by hackers who attempted to extort a ransom. The incident has been listed on the US Department of Health and Human Services' data breach portal as affecting 8,179,772 individuals. iRhythm started sending notification letters to potentially affected individuals earlier this month and filed notices with regulators in several states, including the HHS.
Technical Mitigations AI-generated
• Reset credentials and API keys that may have been exposed, and review access logs for the affected accounts or integrations.
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Target & Sectors
NORTH_AMERICA NORTH_AMERICA healthhealth
Incident Timeline
‎June 2026
IRhythm disclosed a June 2026 data breach affecting over 8 million individuals, and subsequently filed notices with regulators in several states and the US Department of Health and Human Services.
tactic Data Breach
More than 8 million people were impacted by a June 2026 data breach at medical equipment provider iRhythm.
organisation iRhythm
More than 8 million people were impacted by a June 2026 data breach at medical equipment provider iRhythm.
general_metric 8 people
More than 8 million people were impacted by a June 2026 data breach at medical equipment provider iRhythm.
organisation the US Department of Health and Human Services
Earlier this month, the company started sending notification letters to the potentially affected individuals and filed notices with regulators in several states, as well as with the US Department of Health and Human Services (HHS).
organisation HHS
Earlier this month, the company started sending notification letters to the potentially affected individuals and filed notices with regulators in several states, as well as with the US Department of Health and Human Services (HHS).
organisation Customer Data From Internal Systems Related:
Related: Vendor Key Leak Puts Data of 238,000 Denver Health Plan Members at Risk Related: Genesys Hack Exposes Customer Data From Internal Systems Related: 11 Million Impacted by Capcom Data Breach Related: Quest Diagnostics Data Breach Exposed ‘Certain Patient Records’
organisation Capcom Data Breach
Related: Vendor Key Leak Puts Data of 238,000 Denver Health Plan Members at Risk Related: Genesys Hack Exposes Customer Data From Internal Systems Related: 11 Million Impacted by Capcom Data Breach Related: Quest Diagnostics Data Breach Exposed ‘Certain Patient Records’
data_breach 238,000 Denver Plan Members
Related: Vendor Key Leak Puts Data of 238,000 Denver Health Plan Members at Risk Related: Genesys Hack Exposes Customer Data From Internal Systems Related: 11 Million Impacted by Capcom Data Breach Related: Quest Diagnostics Data Breach Exposed ‘Certain Patient Records’
data_breach 11 Genesys Exposes Customer Data
Related: Vendor Key Leak Puts Data of 238,000 Denver Health Plan Members at Risk Related: Genesys Hack Exposes Customer Data From Internal Systems Related: 11 Million Impacted by Capcom Data Breach Related: Quest Diagnostics Data Breach Exposed ‘Certain Patient Records’
organisation ECG
The company, which specializes in wearable cardiac monitoring technology and is best known for its Zio wearable ECG monitor, disclosed the incident in mid-June.
‎2026/10/29
General Document Context HHS Filing Puts iRhythm Data Breach Toll at 8.
organisation HHS Filing
HHS Filing Puts iRhythm Data Breach Toll at 8.2 Million.
organisation iRhythm Data Breach Toll
HHS Filing Puts iRhythm Data Breach Toll at 8.2 Million.
Tactical Metrics
Metrics
data_breach
238,000
Denver Plan Members
Related: Vendor Key Leak Puts Data of 238,000 Denver Health Plan Members at Risk Related: Genesys Hack Exposes Customer Data From Internal Systems Related: 11 Million Impacted by Capcom Data Breach Related: Quest Diagnostics Data Breach Exposed ‘Certain Patient Records’
Metrics
data_breach
11,000,000
Genesys Exposes Customer Data
Related: Vendor Key Leak Puts Data of 238,000 Denver Health Plan Members at Risk Related: Genesys Hack Exposes Customer Data From Internal Systems Related: 11 Million Impacted by Capcom Data Breach Related: Quest Diagnostics Data Breach Exposed ‘Certain Patient Records’
Intelligence Sources
SecurityWeek 2026-10-29