Data Breach at Insight Hospital and Medical Center in Chicago

Insight Hospital and Medical Center in Chicago disclosed a data breach after detecting unusual network activity in September 2025. An investigation revealed that an unauthorized individual accessed its systems between August 22, 2025, and September 11, 2025. The hospital issued a substitute notice on or about January 26, 2026, confirming the incident. Stolen data from the breach was subsequently leaked on the dark web. The incident involves protected health information, implicating HIPAA compliance risks. No specific technical details or CVE IDs were mentioned in the report.