HHS OCR report ยท 2026
Defense Health Agency (TriWest) data breach
OCR report facts
- Covered entity
- Defense Health Agency (TriWest)
- Entity type
- Health Plan
- State
- Virginia
- Individuals affected
- 11,844
- Submission date
- May 21, 2026
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Defense Health Agency, reported that several employees were the targets of an email phishing scheme that affected the protected health information (PHI) of approximately 11,844 individuals. The PHI involved names, addresses, dates of birth, other identifiers, claims information, diagnoses/conditions, and other treatment information. The CE notified HHS, the media, and the affected individuals. OCR provided technical assistance to the CE regarding the HIPAA Rules.
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Defense Health Agency (TriWest) data breach?
The report to HHS OCR lists 11,844 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 21, 2026.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Defense Health Agency (TriWest) legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Defense Health Agency (TriWest).