1. Home
  2. Advocacy
  3. Latest News and Practice Data
  4. CMS and WPS Notify Medicare Patients of Data Breach

On September 6, the Centers for Medicare & Medicaid Services (CMS) and the Medicare Administrative Contractor Wisconsin Physicians Service Insurance Corp. (WPS) began notifying close to 1 million Medicare patients that their protected health information or other personally identifiable information may have been compromised in a recent cybersecurity attack.

The incident involved a May security vulnerability in the MOVEit software on a third-party application used by WPS for the transfer of files during the Medicare claims process. WPS is among the many organizations in the United States that have been impacted by the MOVEit vulnerability.

The CMS continues to investigate this incident with law enforcement agencies and cybersecurity forensic consultants.

If you have any further questions regarding this incident, please call the Experian dedicated and confidential toll-free response line at 833-931-5700.

Make sure to check out our new resource: Cyberattacks and Cybersecurity in Health Care and check back for the latest information and updates.

Most Recent Content

  1. March 10, 2026
  2. CAP, New York pathologists push back on scope-of-practice creep
  3. CAP raises cytology policy questions with CMS
  4. Connect with peers at pathology State Leaders Meet & Greet
  5. House hearing targets rural physician shortages and GME reform
  6. View All