Thornton Township (South Holland, IL) experienced an external system breach between March 10–18, 2025, when an unknown actor potentially acquired files from its network. Unusual activity was detected on March 18, 2025; a comprehensive file review determined on April 1, 2026 that personal information was affected. 153,617 total individuals affected nationwide; 1 Maine resident. IDX credit/CyberScan monitoring and identity recovery services offered. FBI notified.
Affected (this filing): 1