Keystone Health notifies 235,237 patients of data security breach
Keystone Health in Pennsylvania is notifying 235,237 patients about an incident they describe on their website:
On August 19, 2022, we identified an incident that temporarily disrupted our computer systems. We reported the incident to law enforcement and worked with a third-party cybersecurity firm to determine what happened. Our investigation found that an unauthorized party accessed files within our system between July 28, 2022 and August 19, 2022. Some of those files contained patient information, including names, Social Security numbers, and clinical information.
The notice does not indicate whether or not any data was actually exfiltrated, but perhaps they address that question in their fuller notification letter to those affected.