Every public data breach

44 disclosed this week · 26,355 on record

Upstream RollCo

Disclosed Apr 22, 2023748,678 affectedConfirmed

Official notice

The covered entity (CE), Upstream RollCo reported that multiple employees were the targets of an email phishing incident that affected the protected health information (PHI) of 748,678 individuals. The PHI involved included names, dates of birth, Social Security Numbers, physical addresses, claims information, diagnoses, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE implemented additional administrative, technical, and security safeguards.

What is known

People affected748,678 (as reported to HHS)
DisclosedApr 22, 2023
DiscoveredFeb 9, 2023
HappenedJan 24, 2023
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 748678by backfillSource
disclosed2026-09-25
2023-09-15 to 2023-04-22by backfillSource
summary2026-09-25
empty to The covered entity (CE), Upstream RollCo reported that multiple employees were the targets of an email phishing incident that affected the protected health information (PHI) of 748,678 individuals. The PHI involved included names, dates of by backfillSource
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2023-02-09by backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about Upstream RollCo