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44 disclosed this week · 26,355 on record

Optum360

Disclosed Jul 1, 201911,500,000 affectedConfirmed

Official notice

The covered entity (CE), Optum360, reported that its business associate (BA) was the victim of a cyber-attack that affected the electronic protected health information (ePHI) 11,574,452 individuals. The ePHI involved included names, addresses, phone numbers, dates of birth, Social Security numbers, financial information, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice to its website. Following the discovery of the breach, the CE terminated its business relationship with the BA.

What is known

People affected11,500,000 (as reported to HHS)
DisclosedJul 1, 2019
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
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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