The personal and medical records of 160,312 Americans were potentially at risk after a major data breach at a healthcare company.

The sensitive data of hundreds of thousands of Americans is at risk after a healthcare company suffered a cybersecurity attack.

According to the U.S. Department of Health and Human Services for Civil Rights, the Department of Dermatology in Southern Illinois has I mentioned Hacking and IT incident affecting 160,312 individuals, where the breach involved a network server.

In a He notices The company wrote to consumers in April that it had learned that certain systems within its network had been compromised in November 2025, and that it had begun an investigation with third-party cybersecurity specialists.

The review later determined that the files that were likely accessed or obtained in March by an unauthorized third party contained personal and protected health information.

The company says potentially affected data may have included names, addresses, dates of birth, Social Security numbers, phone numbers, email addresses and medical record numbers, with the exact information varying by individual. It also says it had no indication of identity theft or fraud resulting from the incident at the time the notices were issued.

HIPAA journal separately Reports The investigation confirmed unauthorized access to parts of the network where patient data was stored and that files may have been copied.

The post also says that notification messages began appearing on April 2, 2026 and that a threat group claimed responsibility and posted sample data online. The southern Illinois dermatology company says it has taken steps to enhance its cybersecurity practices in the wake of the incident.

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