Every public data breach

44 disclosed this week · 26,355 on record

City of Hope

Disclosed Aug 3, 20173,400 affectedConfirmed

Official notice

City of Hope, the covered entity (CE), reported that a workforce member was a victim of an email phishing scheme. This breach affected 3,400 individuals. The protected health information (PHI) involved in the breach included names, addresses, dates of birth, social security numbers, diagnosis, lab results, medications, and other treatment information. Following the breach, the covered entity disabled remote access to its virtual private network, including email. Additionally, OCR’s investigation resulted in the covered entity improving their security safeguards and retraining employees.

What is known

People affected3,400 (as reported to HHS)
DisclosedAug 3, 2017
HappenedMay 31, 2017
AttackHacking
Data exposedNamesHealth
SectorGovernment · US
StatusConfirmed

Sources

Notices filed

Other breaches at City of Hope

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 3400by backfillSource
summary2026-09-25
empty to City of Hope, the covered entity (CE), reported that a workforce member was a victim of an email phishing scheme. This breach affected 3,400 individuals. The protected health information (PHI) involved in the breach included names, addresseby 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.

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