Interlock Begins Leaking Kettering Health's Stolen Data

Ohio-Based Organization Says It's Making Progress Restoring IT, Beefing Up Security Marianne Kolbasuk McGee (HealthInfoSec) • June 5, 2025

Cybercrime group Interlock has begun publishing some of the 941 gigabytes of data the gang claims to have stolen in a disruptive May attack on Kettering Health. The Ohio-based healthcare organization says it is making IT system restoration progress and enhancing cybersecurity, but is still recovering.

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Kettering Health in an updated statement on Thursday also acknowledged Interlock's claims about the attack (see: Ohio Health System Responding to Cyberattack, Fraud Scams).

"On Tuesday, May 20, Kettering Health was impacted by a cybersecurity incident we have reason to believe was launched by the ransomware group Interlock," Kettering said. "This prompted an immediate and comprehensive response to ensure the security of our systems and the integrity of our data."

During the height ...