McLaren Health Care

McLaren Health Careoperates as a health system based in the United States. Its core offerings include acute care hospital services, outpatient clinics, emergency departments, and scheduled surgical procedures. The organization also provides diagnostic testing and treatments for patients with various medical needs. To support these functions, McLaren Health Care relies on integrated information technology and telecommunications systems for patient scheduling, record access, and communication. When those systems experience disruption, the organization advises patients to bring essential medical documentation to appointments to facilitate continuity of care. Despite technical difficulties, McLaren Health Care strives to keep emergency departments and scheduled surgeries operational. The organization has publicly acknowledged the dedication of its staff in maintaining patient care during periods of extended downtime. The organization emphasizes maintaining clinical services even when technology systems are impaired.

McLaren Health Care is also referred to as McLaren Health System and simply McLaren. In August 2023, the organization disclosed a ransomware attack attributed to the BlackCat/AlphV threat actor group. The attackers claimed to have exfiltrated a substantial volume of patient data and threatened to publish it on the dark web. In August 2024, McLaren Health Care experienced a separate criminal cyber attack that impaired its information technology and phone infrastructure. While emergency departments and scheduled surgeries continued to function, non‑emergent appointments, diagnostic tests, and elective treatments were postponed or rescheduled. The organization notified affected individuals to bring critical health information to visits until normal system operations were restored. Following each incident, McLaren Health Care engaged cybersecurity specialists and law enforcement agencies to investigate the scope and origin of the breaches. Its headquarters is situated in the United States of America.