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Medium

iRhythm Confirms Data Stolen in Cyberattack, Ransom Demanded

Digital health company iRhythm Holdings confirmed a cyberattack involving certain third-party-hosted business applications.

Key points

  • iRhythm Holdings discovered unauthorized activity on June 8, 2026.
  • Patient protected health information, proprietary data, and personal data were stolen.
  • Attackers demanded a ransom.

Connected intelligence

Signal brief

Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.

02

Likely method

Confidentiality impact

Threat source not confirmed

03

Potential impact

Data Exposure

Confidentiality

Published
Jun 8, 2026
Updated
Jun 25, 2026
Confidence
Medium
Evidence
5 sources

Structured assessment

Signal analysis

This 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.

Threat source

Threat source not confirmed

Watch exposure paths that could affect data, operations or third-party trust.

Business impact

Potential data exposure
Impact area
Confidentiality
Likely asset
User or customer data

Mentioned entities

IrhythmtechData DisclosureCyberattackRansom Demanded DigitalHoldingsAttackersPatient

Quick context

Questions about this signal

What happened in this signal?

Digital health company iRhythm Holdings confirmed a cyberattack involving certain third-party-hosted business applications. The company learned of the breach on June 8, 2026, which resulted in the theft of patient protected health information, proprietary data, and other personal data. Attackers subsequently demanded a ransom.

When was this signal reported?

Shadow Tier lists Jun 8, 2026 as the signal date.

Which organization is connected to this signal?

Irhythmtech is the organization connected to this public signal.

Explore Irhythmtech
Which impact area is relevant?

This signal is connected to data exposure and breach intelligence based on its reported consequences.

Explore data exposure and breach intelligence