McLaren Health Care says data breach impacts 743,000 patients
ID: fd60c776-17e8-50f1-8cf6-c60663a0b1c6
STIX ID: report--fd60c776-17e8-50f1-8cf6-c60663a0b1c6
Feed Name: Bleeping Computer
Threat Score
McLaren Health Care experienced a ransomware attack in July–August 2024 that disrupted IT and phone systems and exposed patient data for roughly 743,000 individuals; forensic work completed in May 2025 determined the intrusion window and resulted in notification to affected patients. The incident is linked to the INC ransomware group (printer-printed ransom notes) and follows a separate July 2023 ALPHV/BlackCat breach that impacted 2.2 million people.
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