- State
- OK
- Covered entity type
- Healthcare Provider
- Individuals affected
- 1,907
- Business associate present
- Yes
- 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), Arbuckle Memorial Hospital, reported that its business associate (BA) experienced a ransomware attack that compromised the protected health information (PHI) of approximately 1,907 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, and financial information. The CE notified HHS, affected individuals, and the media. OCR has initiated a compliance review of the business associate regarding this breach.
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.