Breachesby GlyphCity of Hope
Disclosed Dec 12, 2023902,540 affectedConfirmed
The covered entity (CE), City of Hope, reported that it experienced a cyber-attack that affected the protected health information (PHI) of 902,540 individuals. The PHI involved included names, dates of birth, Social Security and drivers’ license numbers, financial and health insurance information, diagnoses, and other treatment information. The CE notified HHS, affected individuals, and the media. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards.
What is known
| People affected | 902,540 (as reported to HHS) |
|---|---|
| Disclosed | Dec 12, 2023 |
| Discovered | Oct 13, 2023 |
| Happened | Jul 7, 2023 |
| Attack | Hacking |
| Data exposed | NamesHealth |
| Sector | Government · US |
| Status | Confirmed |
Sources
California Attorney General breach notice: City of HopeWashington Attorney General breach notice: City of HopeOregon DOJ breach notice: City of HopeVermont Attorney General: 2024-04-02 City of Hope Data Breach Notice to ConsumersHHS OCR breach report (archive, resolved): City of Hope (Healthcare Provider, CA)
Notices filed
Other breaches at City of Hope
History of this record
[] to ["names","health"]by backfillSource
empty to hhsby backfillSource
empty to 902540by backfillSource
2024-04-02 to 2023-12-12by backfillSource
empty to The covered entity (CE), City of Hope, reported that it experienced a cyber-attack that affected the protected health information (PHI) of 902,540 individuals. The PHI involved included names, dates of birth, Social Security and drivers’ liby backfillSource
empty to https://ago.vermont.gov/document/2024-04-02-city-hope-data-breach-notice-consumersby backfillSource
unknown to hackingby backfillSource
empty to 2023-10-13by backfillSource
First recordedby backfillSource
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.