ILHHS OCRFirst filing
Filed Sep 24, 2023bd_2fb1e8ae3723791a
Cook County Health and Hospitals System (IL) reported to HHS OCR on 2023-09-24 that its business associate experienced a ransomware attack affecting 1,248,546 individuals. PHI on network servers was compromised, including names, addresses, dates of birth, Social Security numbers, diagnoses, and other treatment information. The CE notified HHS, affected individuals, and the media, and terminated its business relationship with the responsible BA.
Affected (this filing): 1,248,546
HHS notified