iRhythm Technologies Data Breach Lawsuit Investigation
Received a June 2026 breach notice from iRhythm?
Dapeer Law, P.A. is investigating a potential class action against iRhythm Technologies, Inc., a digital healthcare and cardiac monitoring company, on behalf of the 298,647 individuals whose personal and patient information may have been accessed and downloaded in the June 2026 cybersecurity incident.
Who may qualify
You may be eligible to participate in a class action if any of the following applies:
- You received a data breach notification letter from iRhythm dated June 2026.
- Your notice indicates that information such as your name, contact details, date of birth, patient insurance number, or iRhythm account or device details may have been involved.
- You are a current or former iRhythm patient or customer whose information was maintained in the company's hosted business applications.
- No proof of harm required to consult with counsel. You do not need to have already suffered identity theft to explore your legal options.
- Excluded: individuals who did not receive a breach notice and whose information was not involved in the incident.
Not sure if you qualify?
Send us your notice, we'll confirm your eligibility at no cost.
What happened
According to the notice filed with the California Attorney General, iRhythm Technologies, Inc. detected unauthorized access within certain third-party hosted business applications on June 8, 2026. A forensic investigation determined that threat actors accessed and downloaded data from those applications between June 3 and June 8, 2026. iRhythm states it activated its incident response plan on detection and engaged external cybersecurity professionals.
iRhythm began notifying affected individuals by letters dated October 2, 2026, nearly four months after the intrusion was discovered. Regulatory filings list 298,647 individuals as affected. The notice states that the information involved may include names, contact information (address, email address, and phone number), dates of birth, patient insurance numbers, dates of service, iRhythm account numbers, and iRhythm device serial numbers. The company states it has no evidence of identity theft or misuse to date, and the notice does not indicate that complimentary credit monitoring is being offered.
Because the information relates to medical services and health insurance, the exposure may carry risks beyond ordinary identity theft, including medical identity theft, insurance fraud, and targeted phishing that references real dates of service or device information. Dapeer Law is reviewing whether affected individuals may have claims under California and other state data breach and medical privacy laws.
What to do if you received a letter
Keep your notice letter
Do not discard it. Your letter confirms that you were among the individuals identified in the iRhythm review and is important evidence if you decide to participate in a lawsuit.
Place a fraud alert or security freeze
The iRhythm notice does not indicate that complimentary credit monitoring is being offered. You can request a free credit report from each of the three bureaus and place a no-cost fraud alert or security freeze. Taking these protective steps does not waive your right to pursue legal action.
Place a fraud alert or credit freeze
Contact Equifax, Experian, and TransUnion to place a fraud alert or freeze on your file. Request a free weekly credit report from AnnualCreditReport.com, and use the FTC's IdentityTheft.gov recovery guide. Because patient insurance numbers and dates of service were involved, also review the Explanation of Benefits statements from your health insurer for services or claims you do not recognize.
Speak with a data breach attorney
Consultations with Dapeer Law are free and confidential. We'll review your notice, explain your options under California and other state data breach and medical privacy laws, and advise whether you may be eligible to join a class action.
Submit your notice for a free review
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Breach timeline
Compensation you may be entitled to
Out-of-pocket expenses
Credit freezes, identity restoration services, and other costs incurred responding to the breach.
Time spent monitoring
Hours spent reviewing accounts, disputing fraudulent charges, and dealing with identity theft issues.
Identity theft & fraud losses
Unreimbursed funds stolen from accounts, unauthorized credit lines, medical identity theft, insurance fraud, or tax refund fraud tied to the breach.
Statutory damages
Certain state data breach and consumer protection statutes provide for fixed damages regardless of actual loss.
Injunctive relief
Court orders requiring iRhythm to implement stronger data security practices and oversight of the third-party hosted applications that store patient and customer information.
Compensation categories depend on applicable state law, the types of data exposed, and documented losses. No recovery is guaranteed.
Common questions
I received a data breach letter from iRhythm. What should I do? +
Keep your breach notice letter, since it confirms you were affected. Place a free fraud alert or security freeze with the three credit bureaus, request your free credit reports, and review your financial and health insurance statements for unfamiliar activity. Because patient insurance numbers and dates of service were involved, watch closely for signs of medical identity theft. You can also contact a data breach attorney to understand your options.
Am I eligible to join a class action against iRhythm? +
If you received a breach notice from iRhythm, you may qualify. Eligibility typically depends on your state of residence, the categories of your information that were involved, and whether you have experienced any documented harm. A free consultation can clarify where you stand.
How much money could I receive from a class action lawsuit? +
Data breach class action recoveries vary significantly. Settlements typically range from a few hundred dollars for basic out-of-pocket losses to several thousand dollars for documented identity theft, with class size, damages, and negotiation all affecting the final amount. No payout is guaranteed, and this investigation has not yet resulted in a settlement.
What personal information was exposed in the breach? +
According to the notice, the information involved may include names, contact information (address, email address, and phone number), dates of birth, patient insurance numbers, dates of service, iRhythm account numbers, and iRhythm device serial numbers. Check your individual letter, which may describe the specific information involved for you.
Did iRhythm offer free credit monitoring? +
The iRhythm notice recommends self-help measures, such as fraud alerts, security freezes, and free credit reports, but does not indicate that complimentary credit monitoring is being provided. Using these protections does not waive your right to pursue a claim.
How many people were affected by the iRhythm breach? +
Regulatory filings list 298,647 individuals as affected by the iRhythm data breach. This page will be updated as more information becomes available.
Is there a deadline to take legal action? +
Yes. Statutes of limitations for data breach claims vary by state and legal theory, typically ranging from one to six years. Waiting can permanently bar your claim. Contact us as soon as possible for a free evaluation.
How do I get a copy of the official breach notice? +
iRhythm filed a sample notice with the California Attorney General, which publishes data breach notifications on its website. You can download it using the link on this page, or contact Dapeer Law and we can help you obtain a copy during a free consultation.
Sources & references
- Official breach notice filing · California Attorney General, iRhythm Technologies sample breach notice
- Company · iRhythm Technologies, Inc. (irhythmtech.com)
- Credit bureau freezes · Equifax · Experian · TransUnion
- Free weekly credit reports · AnnualCreditReport.com
- Identity theft recovery guide · FTC IdentityTheft.gov
Don't let the deadline decide for you. Submit your claim today.
You only have a limited window to act. Our team will review your notice, explain your options, and tell you whether you may be eligible to recover compensation, at no cost to you.
