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Regulator-posted notice

Breach notice filed by OS, Inc. (May 2019)

Organization named: OS, Inc. Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of May 2, 2019.

Organization as reported
OS, Inc., WI
Entity type as reported
Business Associate
Category as reported
Hacking/IT Incident
Location of information as reported
Email
Submission date
May 2, 2019
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 13427, row:4566)
Archived copy
Held in the private archive (provenance)

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.

The source's own words, from the revision above.

Figures, per source

  • 7,880 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date May 2, 2019, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 13427)
  • Approved by a reviewer

Organizations linked by a reviewer

  • OS, Inc. Named as a service provider Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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