- State
- OK
- Covered entity type
- Healthcare Provider
- Individuals affected
- 611,743
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
The covered entity (CE), Emergency Medical Services Authority, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 611,743 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, and treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards. Staff were retrained to better protect PHI.
Change history
- 9/23/2026Added to OCR's archive list
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.