Breachesby GlyphKettering Health
Disclosed May 20, 20251,695,382 affectedConfirmed
Interlock ransomware cripples Kettering Health, exposes 1.7M people
A May 2025 ransomware attack forced Ohio's Kettering Health to cancel procedures during a system-wide outage; Interlock claimed it and leaked data after Kettering refused to pay. The network was first breached April 9, 2025, and Kettering later reported 1,695,382 affected people to HHS.
What is known
| People affected | 1,695,382 (as reported by the organization) |
|---|---|
| Disclosed | May 20, 2025 |
| Attack | Ransomware |
| Data exposed | NamesSocial Security numbersFinancialGovernment IDsHealthInsuranceCredentials and tokens |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
First recordedby seedSource
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.