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Cyber Threat
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Ransomware victim Healthcare

MyMichigan Health

Listed by Metaencryptor on · organisation based in United States

www.mymichigan.org

Disclosed
Oct 12, 2026
Leak-site listing date
Threat group
Metaencryptor
55 victims listed
Country
United States
#1 most targeted
Sector
Healthcare

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Metaencryptor. Figures and technique mappings are quoted from the source data, not inferred.

About MyMichigan Health

MyMichigan Health provides a full continuum of care across a wide array of settings, including urgent care centers, home health, virtual care, as well as medical offices. Their expertise spans 85 specialties and subspecialties, including behavioral health, cardiology, primary care, hematology/oncology, neurosciences, orthopedics, women and children services, and vascular surgery among others. Data size: — Revenue: USD 5.1B

Source record: ransomware.live

About the Metaencryptor group

MetaEncryptor is a ransomware group first observed in mid-2023, targeting medium-to-large enterprises in legal, technology, logistics, manufacturing, and finance sectors primarily in the UK, Europe, and Southeast Asia, using AES-256/RSA-2048 encryption and double extortion. Metaencryptor has listed 55 victims since August 2023.

Incident analysis

MyMichigan Health was listed by Metaencryptor ransomware, a group with 55 victims recorded in this database. The listing appeared on the group's leak site on October 12, 2026.

MyMichigan Health is based in United States and operates in the Healthcare sector. United States ranks #1 worldwide for ransomware disclosures, with 9,991 victims in this database.

Sector context. Healthcare organisations are high-value ransomware targets because patient data is extremely sensitive, regulatory penalties for breaches are severe, and operational downtime can threaten patient safety — all factors that increase ransom payment pressure.

Metaencryptor typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was MyMichigan Health attacked by ransomware?

Yes. MyMichigan Health was listed as a victim of the Metaencryptor ransomware group on October 12, 2026. The organisation is based in United States and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked MyMichigan Health?

MyMichigan Health was attacked by Metaencryptor ransomware. Metaencryptor is one of the most active ransomware groups, having claimed 55 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the MyMichigan Health ransomware attack occur?

The ransomware attack on MyMichigan Health was disclosed on October 12, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the MyMichigan Health ransomware attack?

The specific data stolen from MyMichigan Health has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Healthcare organisation, MyMichigan Health likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Metaencryptor attacks?

To defend against Metaencryptor and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.