Kettering Health hit by Interlock ransomware, data leaked
Kettering Health, an Ohio-based healthcare network, confirmed a ransomware attack by the Interlock group that disrupted internal systems, phone lines, and electronic health records across its 14 hospitals. The attack, which began in late May, led to procedure cancellations and ambulance diversions. The Interlock ransomware group claimed responsibility on June 4, 2025, and allegedly stole 941 GB of data, including patient and employee information. Kettering Health publicly acknowledged the ransomware group's link on June 6, 2025, and confirmed eradication of the threat actors' tools by June 5, 2025.
Ketteringhealth
- Domain
- ketteringhealth.org
- Sector
- Health Care and Social Assistance
- Signals
- 1 linked
Signal context
First seen: Jun 6, 2025
Last updated: Jun 26, 2026
Status: Public signal
Key points
- Ransomware attack by Interlock group.
- Disrupted internal systems, phone lines, and electronic health records.
- Affected 14 hospitals, leading to procedure cancellations and ambulance diversions.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Health Care and Social Assistance
Likely country: Location not provided
The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.
- Source type: outside the affected organization
- Source type: possible insider or internal misuse
Impact area: Confidentiality, Availability
Likely asset: User or customer data
- 6 signals in the same sector
- 100 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
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