Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

US Oncology

Disclosed May 9, 20195,168 affectedConfirmed

Official notice

What is known

People affected5,168 (as reported by the organization)
DisclosedMay 9, 2019
DiscoveredMar 27, 2019
HappenedJun 7, 2018
AttackNot stated
Data exposedNot stated
SectorHealthcare · US
StatusConfirmed

Sources

Official noticejustice.oregon.gov
Oregon DOJ breach notice: US Oncology
Official noticein.gov
Indiana Attorney General 2019 data breach report: US Oncology

Notices filed

Residents of ORMay 9, 2019
Oregon DOJ5,168 people
Residents of INMay 9, 2019
Indiana AG22 people
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 5168by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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