McLaren Health Care Hack Affected Millions; Lawsuits Pile Up

McLaren Health Care is notifying 2.2 million individuals of a data breach weeks after ransomware group Alphv/BlackCat claimed to have stolen 6 terabytes of patient records in an August attack. In the meantime, the number of federal lawsuits filed against the Michigan-based healthcare system has more than doubled over the last month.

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McLaren Health Care on Thursday reported the hacking incident to Maine’s attorney general as affecting nearly 2.19 million individuals, including 77 Maine residents.

The compromised information includes individuals’ name, Social Security number, health insurance information, birthdate, and medical information including billing or claims information, diagnosis, physician information, medical record number, Medicare/Medicaid information, prescription/medication information, diagnostic results and treatment information, McLaren said.

McLaren also reported the incident to federal regulators on Oct. 20 with a placeholder estimate of 501 individuals affected at that time. But based on McLaren’s current estimate of nearly 2.2 million individuals affected,…