Healthcare giant McLaren reveals data on 2.2 million patients stolen during ransomware attackReading Time: 2 minutes
Michigan-based McLaren Health Care has confirmed that the sensitive personal and health information of 2.2 million patients was compromised during a cyberattack earlier this year. A ransomware gang later took credit for the cyberattack.
In a new data breach notice filed with Maine’s attorney general, McLaren said hackers were in its systems for three weeks during July 28 through August 23 before the healthcare company noticed a week later on August 31.
McLaren said the hackers accessed patient names, their date of birth and Social Security number, and a wealth of medical information, including billing, claims and diagnosis information, prescription and medication details, and information relating to diagnostic results and treatments. Medicare and Medicaid patient information was also taken.
McLaren is a healthcare provider with 13 hospitals across Michigan and about 28,000 total employees. McLaren, whose website touts its cost efficiency measures, made over $6 billion in revenue in 2022.
News of the incident broke in October when the Alphv ransomware gang (also known as BlackCat) claimed responsibility for the cyberattack, claiming it took millions of patients’ personal information. Days after the cyberattack was disclosed, Michigan attorney general Dana Nessel warned state residents that the breach ‘could affect large numbers of patients.’
Alphv/BlackCat claimed in its post that the gang had been in contact with a McLaren representative, without providing evidence of the claim.
When reached by email, McLaren spokesperson David Jones declined to comment beyond the company’s public statement or answer our questions about the incident. The spokesperson would not say if the company received a demand for payment, or if it paid the hackers. McLaren would not make its chief information security officer George Goble available for an interview.
McLaren currently faces at least three class action lawsuits related to the cyberattack.
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