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Network Health

Disclosed Sep 8, 20179 years ago51,232 affectedConfirmed

Official notice

Network Health, the covered entity (CE), reported that its employees were the victims of an email phishing attack. The affected accounts contained the protected health information (PHI) of 51,323 individuals. The PHI involved included names, addresses, phone numbers, dates of birth, claims data, provider information, and Medicare numbers. The CE notified HHS, affected individuals, and the media. The CE also notified the Federal Bureau of Investigation. As a result of this breach and OCR’s investigation, the CE implemented additional administrative and technical safeguards and retrained its staff. As a part of this training, the CE instructed employees on the proper methods of identifying fraudulent email communications. OCR obtained assurances that the CE implemented the aforementioned corrective actions.

What is known

People affected51,232 (as reported to HHS)
DisclosedSep 8, 2017
AttackHacking
Data exposedNames, Health
SectorInsurance · US
StatusConfirmed

Sources

Source
HHS OCR breach report (archive, resolved): Network Health (Health Plan, WI)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalSep 8, 201751,232
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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