Kent District Library (KDL), a public library system in Kent County, Michigan, experienced a ransomware-related network outage in 2026. This incident forced branch closures and disrupted services. KDL publicly stated it was investigating the incident with third-party digital forensic and cybersecurity specialists. KDL also said it was reviewing whether any personal information was affected.
While KDL has not publicly confirmed specific data categories as compromised, the Interlock ransomware group claimed responsibility and alleged access to financial documents, contact information for organizations, personal data on customers and employees, building plans, blueprints, and incident-related information. KDL has not yet publicly disclosed the number of affected individuals. It remains unclear whether SSN or medical data was involved, though the attacker claimed access to financial documents, which has not been publicly confirmed by KDL.
More details about the breach may emerge as KDL continues its investigation and makes further public statements. Breach notifications to affected individuals may also be delayed while KDL assesses the scope of the incident.