# iRhythm reports patient-data breach and updates financial guidance

_Published Friday, October 9, 2026 at 5:18 AM EDT · Security · Latest · Tier 2 — Notable_

![iRhythm reports patient-data breach and updates financial guidance — Primary](https://s.yimg.com/lo/mysterio/api/d15a05ed72d2801fc584dfeb16087b11a2a768b8dc508764a31aff8d7d38c273/lightyear_networkapi/resizefill_w1200%3Bquality_80%3Bformat_webp/https%3A%2F%2Fmedia.zenfs.com%2Fen%2Fsimply_wall_st__316%2F45f37ce033bb33445475c2706f28a490.jpg)

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.

## Sources

- [Yahoo Finance](https://finance.yahoo.com/healthcare/articles/irhythm-holdings-irtc-disclosed-unauthorized-081242802.html)

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Canonical: https://techandbusiness.org/newswire/nY0GzcvUpK8sW_yx9o_aAb
Published: 2026-10-09T09:18:34.346Z
Story chronology: 2026-10-09T08:12:42.000Z
Retrieved: 2026-10-09T11:43:43.982Z
Publisher: Tech & Business (techandbusiness.org)