ALPHV/BlackCat ransomware attack hits major Michigan health system

Major Michigan-based health system McLaren HealthCare has disclosed being impacted by a ransomware attack after the intrusion was claimed to be conducted by the ALPHV/BlackCat ransomware operation, reports The Record, a news site by cybersecurity firm Recorded Future. McLaren had 6 TB of data allegedly stolen by ALPHV/BlackCat, which also claimed that exfiltrated data included millions of patients' personal information and hospital videos. Billing and electronic health record system-related outages were initially reported by McLaren earlier last month, with the Detroit Free Press noting that the health system's 14 facilities had their computer network shut down as a result of the attack. Investigation into the incident is still underway, according to a McLaren spokesperson, who said that additional measures have already been implemented to strengthen the health system's defenses. Such an attack against McLaren comes weeks after ALPHV/BlackCat was involved in the compromise of MGM Resorts and a month after a ransomware attack against Prospect Medical Holdings.