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OS

Disclosed May 2, 20197 years ago7,880 affectedConfirmed

Official notice

OS, Inc., a business associate (BA), reported that one of its employees was the victim of an email phishing scheme that affected the electronic protected health information (ePHI) of 46,578 individuals. The ePHI involved included names, birthdates, addresses, Social Security numbers, claims information, diagnoses/conditions, lab results, and medications prescribed. The BA notified HHS, affected individuals, the media, and provided substitute notice. In its mitigation efforts, the BA implemented new technical safeguards and retrained its staff on email security precautions. OCR obtained assurances that the CE implemented the corrective actions noted.

What is known

People affected7,880 (as reported to HHS)
DisclosedMay 2, 2019
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
HHS OCR breach report (archive, resolved): OS (Business Associate, WI)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalMay 2, 20197,880
History of this record
  • 2026-09-25 · added · backfill source

First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

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