- State
- TX
- Covered entity type
- Healthcare Provider
- Individuals affected
- 143,833
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
The covered entity (CE), Tenet Healthcare, on behalf of Greater Dallas Healthcare Enterprises, reported that an employee of the CE experienced a phishing attack that affected the protected health information (PHI) of 143,833 individuals. The PHI involved included names, addresses, dates of birth, claims and treatment information, diagnoses, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative, technical, and security safeguards 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.