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On Lok Senior Health Services
ArchivedSubmitted 07/13/2021
Updated 14 hours ago ()
- State
- CA
- Covered entity type
- Health Plan
- Individuals affected
- 1,643
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
OCR description
The covered entity (CE), On Lok Senior Health Services, reported that it experienced a ransomware attack that affected the electronic protected health information (ePHI) of 1,643 individuals. The ePHI involved included names, dates of birth, addresses, diagnoses/conditions, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, and the media. The CE also created a call center and offered complimentary credit monitoring services. In response to the breach, the CE implemented additional administrative, technical, and security safeguards to better protect its ePHI. OCR provided technical assistance to the CE regarding the HIPAA Security Rule.
Change history
- Sep 23, 2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.