Insight Hospital and Medical Center Announces Cyberattack & Data Breach

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Data Breach at Insight Hospital Exposes Patient Information on Dark Web On January 26, 2026, Insight Hospital and Medical Center in Chicago reported a data breach involving unauthorized access to its network. The breach occurred between August 22, 2025, and September 11, 2025, during which sensitive data was compromised and subsequently leaked on the dark web. The hospital issued a substitute notice detailing the incident and its timeline. 3 sources 48