Kettering Health, a significant Ohio-based healthcare network, has allegedly suffered a major data breach at the hands of the Interlock ransomware group. The group has now reportedly published a substantial 2.6 TB of data, purportedly belonging to the healthcare provider. This development follows earlier reports around May 20-21, 2025, when Kettering Health experienced significant operational disruptions due to a cyberattack, which was widely attributed to the Interlock group at the time.
Kettering Health, headquartered in Kettering, Ohio, is a vital healthcare organization serving the Greater Dayton area and surrounding communities. It operates an extensive network including nine hospitals, numerous acute care facilities and clinics, and Kettering College, with a large workforce of physicians and employees. The alleged publication of such a large volume of data raises grave concerns about the potential exposure of sensitive patient and organizational information. The full extent and nature of the compromised data are yet to be officially detailed.
This incident underscores the persistent and evolving threat that ransomware attacks pose to critical infrastructure, particularly the healthcare sector. Organizations are continually urged to bolster their cybersecurity defenses and have robust incident response plans in place. The alleged data publication by the Interlock group is a severe escalation following the initial attack that impacted Kettering Health’s services and patient care capabilities in late May.
