On Oct. 2, 2022, CommonSpirit detected activity on its IT network that was later determined to be ransomware, a cyberattack that the company recently disclosed more information about.

Chicago-based CommonSpirit said during its Oct. 2 ransomware attack, an unauthorized third party gained access to files containing patients’ personal information from one of its affiliates, Seattle-based Virginia Mason Franciscan Health.

CommonSpirit said although its review of the files is still ongoing, it has identified that the information in some of the files related to patients, family members of patients, or caregivers of patients include names, addresses, phone numbers, dates of birth, and a unique ID used only internally by the organization. 

At this time, the Chicago-based health system said it does not believe the information within the files has been misused, and it is working on notifying all affected individuals, according to a Dec. 1 update posted by CommonSpirit.

Read the full article at Becker’s Hospital Review.