LANSING, Mich. (WLNS) — Approximately 19,000 Corewell Health patients may have had their personal information compromised in a 2024 data breach that affected Corewell vendor Pinnacle Holdings, the Michigan-based healthcare company announced Friday.
Corewell spokeswoman Sharon Stanton says the company was “recently notified” of the event and launched a data review to determine who was impacted, allowing Pinnacle, who previously provided healthcare consulting services to Corewell, to mail notification letters to more than 19,000 Corewell patients as well as other affected individuals.
In a post to their website, Pinnacle says a network disruption occurred in some of the company’s systems on Nov. 25, 2024. The investigation triggered by this event later uncovered that some information in the company’s network may have been subject to unauthorized access between Nov. 11 and Nov. 25, 2024…