The personal information of more than 900,000 Medicare beneficiaries was exposed during a data breach that occurred between May 27 and May 31, 2023. Information was stolen exploiting a "vulnerability" in the MOVEit software program used by Medicare contractor Wisconsin Physicians Service Insurance Corporation (WPS) to transfer files during the Medicare claims process, according to the Centers for Medicare & Medicaid Services (CMS), the federal agency that manages the Medicare program.
Notification is being sent by CMS and WPS to the almost 947,000 individuals affected that some of their protected health information (PHI) and personally identifiable information (PII) was compromised in the May 2023 security breach.
