Every public data breach

47 disclosed this week · 26,367 on record

Unitedhealth Group

Disclosed Mar 15, 20181,755 affectedConfirmed

Official notice

The covered entity (CE), UnitedHealth Group, reported that an employee of its business associate (BA) mistakenly mailed the protected health information (PHI) of 896 individuals to the wrong recipients. The PHI involved included names, dates of birth, medical information, and financial and health insurance information. The CE notified HHS and the affected individuals and provided complimentary credit monitoring services. In its mitigation efforts, the BA implemented additional technical safeguards to better protect PHI and retrained its staff on the requirement to safeguard PHI.

What is known

People affected1,755 (as reported to HHS)
DisclosedMar 15, 2018
AttackInsider
Data exposedNamesHealth
SectorInsurance · US
StatusConfirmed

Sources

Notices filed

Other breaches at Unitedhealth Group

History of this record
records2026-09-25
896 to 1755by backfillSource
disclosed2026-09-25
2018-04-10 to 2018-03-15by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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