Covenant Health Notifying 480K Patients of 2025 Data Theft

Ransomware Gang Qilin Had Claimed It Stole 852 GB of Health System's Data Marianne Kolbasuk McGee (HealthInfoSec) • January 5, 2026

Nearly half a million patients of a Catholic healthcare network that serves New England and parts of Pennsylvania began the new year by receiving notifications that hackers may have stolen their health information in a May 2025 hacking incident.

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Ransomware gang Qilin claimed responsibility last spring for an attack against the Massachusetts-based Covenant Health. The health network said Dec. 31 the breach affected 478,188 individuals. Covenant had reported the incident to federal regulators in July as affecting only about 7,900 individuals.

Covenant last May disclosed it was dealing with an incident disrupting IT systems at several clinics, hospitals and ...