Emergency Medical Services Authority
Disclosed Mar 22, 20242 years ago611,743 affectedConfirmed
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.
What is known
| People affected | 611,743 (as reported to HHS) |
|---|---|
| Disclosed | Mar 22, 2024 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): Emergency Medical Services Authority (Healthcare Provider, OK)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Mar 22, 2024 | 611,743 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.