Class Action U reported on October 13, 2026, that ransomware group Metaencryptor had listed MyMichigan Health on a dark web leak site. The report was based on the group’s claim; MyMichigan Health had not publicly confirmed an incident, and the source did not cite an official notice or independent confirmation.
The number of affected people and the types of data involved have not been disclosed. No Social Security numbers, medical records, or financial information have been confirmed as exposed. The page identified no affected states beyond describing MyMichigan Health as a health system in Midland, Michigan.
As of October 13, 2026, the page reported no notice to patients and said the date of any intrusion and the date it was discovered were unknown. It noted that forensic review may take weeks or months, so further details may emerge.