McLaren Health Care’s Data Drama: Ransomware Strikes Twice, 743,000 Patients Affected!
McLaren Health Care warns 743,000 patients of a data breach by the INC ransomware gang, discovered in August 2024. Although the attack was like a bad soap opera, it took until May 2025 to know who was impacted. McLaren’s data breach notification reveals only names exposed, leaving much to the imagination.

Hot Take:
McLaren Health Care’s data breach saga continues, proving that when it rains, it pours data breaches! This time, it’s the INC ransomware gang throwing a wrench in their cyber gears. With over 743,000 patients affected, McLaren might need more than just a pit stop to fix this one. Who knew that “going viral” would take on a whole new meaning in the world of healthcare?
Key Points:
- McLaren Health Care warns 743,000 patients of a data breach caused by the INC ransomware gang.
- The attack was discovered in August 2024, but forensic investigations lasted until May 2025.
- McLaren Health Care operates 14 hospitals in Michigan and collaborates with over 113,000 providers.
- The breach marks McLaren’s second major incident in recent years, following a 2023 ALPHV/BlackCat attack.
- Full names were exposed, but the extent of the data breach remains unclear.
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