Every public data breach

44 disclosed this week · 26,355 on record

Highlands Oncology Group

Disclosed Aug 1, 2025111,766 affectedConfirmed

Official notice

What is known

People affected111,766 (as reported to HHS)
DisclosedAug 1, 2025
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at Highlands Oncology Group

History of this record
Added2026-09-25
First recordedby backfillSource

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

Everything about Highlands Oncology Group