McLaren Health Care Data Breach Lawsuit Investigation
Were you one of the 743,131 patients notified about the McLaren Health Care data breach? Hackers may now have your Social Security number, medical records and more. Find out how to protect yourself and whether you can file a claim today.
What Happened?
McLaren Health Care and its Karmanos Cancer Institute subsidiary detected suspicious activity on August 5, 2024. A forensic investigation confirmed that an international ransomware group infiltrated the network between July 17 and August 3, 2024, accessing sensitive files before McLaren contained the attack.
What Information Was Exposed?
The review completed on May 5, 2025 determined the following data fields were potentially compromised:
- Full name
- Social Security number
- Dates of birth
- Physical addresses
- Driver’s license or other government ID numbers
- Medical and treatment information
- Health insurance details
- Financial information related to billing
Who Is Affected?
The breach impacts 743,131 people across the United States, including 85 Massachusetts residents and 25 Maine residents, as disclosed to state attorneys general on June 20, 2025. If you received a letter or email from McLaren, your data is at risk.
McLaren Health Care’s Response
- Isolated compromised systems and maintained clinical operations.
- Engaged third-party cybersecurity experts to investigate.
- Reported the incident to state and federal regulators plus the credit bureaus (Equifax, Experian and TransUnion).
- Set up a dedicated call center and published updates on its website.
- Offered 12 months of free credit monitoring and identity-theft protection through IDX.
Protect Yourself Now
Even with monitoring services, you should take the following immediate steps:
- Review your credit reports for unfamiliar accounts.
- Place a free fraud alert or security freeze with the credit bureaus.
- Check medical benefit statements for unknown services.
- Use strong, unique passwords and enable multi-factor authentication on healthcare portals and financial accounts.
- Report suspected identity theft to law enforcement and the FTC (IdentityTheft.gov).
Potential Compensation & Lawsuit Investigation
If your personal or health information was exposed, you may be entitled to monetary damages for:
- Time spent monitoring and repairing credit
- Out-of-pocket expenses for identity-theft protection
- Reimbursement of fraudulent charges or medical claims
- Future credit-monitoring costs
- Emotional distress and loss of privacy
Attorneys are actively investigating claims. Completing a claim form takes just minutes and could secure compensation and extended identity-theft protection.
File Your Claim NowFrequently Asked Questions
How do I know if McLaren Health Care notified me?
McLaren mailed letters dated June 20, 2025. Look for a notice titled “Notice of Data Security Incident.” If your address changed recently, call the McLaren hotline listed in the letter or visit their website.
Is the one-year credit monitoring from McLaren Health Care enough?
Many experts recommend at least two years of monitoring after a healthcare data breach. Joining the lawsuit may help you obtain extended or lifetime services at no cost.
Will joining the McLaren Health Care data breach lawsuit cost me anything?
No. Most data-breach class actions are handled on a contingency basis—lawyers only get paid if they recover money for the class.
What damages can I claim from the McLaren Health Care breach?
You may recover reimbursement for fraudulent charges, lost time, credit-monitoring fees, and potentially statutory or punitive damages depending on state law.
Can I still sue McLaren Health Care if I haven’t experienced fraud yet?
Yes. Courts increasingly recognize the risk of future identity theft as a compensable injury. Don’t wait until fraud occurs—protect your rights now.