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HHS OCR report · 2014

Montana Department of Public Health & Human Services data breach

Montana Department of Public Health & Human Services, a health plan in Montana, reported a breach affecting 1,062,509 individuals to HHS OCR on Jul 7, 2014.

OCR report facts

Covered entity
Montana Department of Public Health & Human Services
Entity type
Health Plan
State
Montana
Individuals affected
1,062,509
Submission date
Jul 7, 2014
Type of breach
Hacking/IT Incident
Location of breached information
Network Server
Business associate present
No
Status
Archive (closed)

OCR description

Montana Department of Public Health and Human Services, the covered entity (CE), experienced a server hacking incident due to an undetected and unpatched application code vulnerability, which allowed misuse of its information system resources for about 9 months. The incident affected over 1 million individuals’ demographic, clinical, and/or financial information. Upon discovery, the CE immediately took the affected server offline, reported the incident to state and federal law enforcement, ...

Text as published on the HHS OCR breach portal.

Frequently asked questions

How many people were affected by the Montana Department of Public Health & Human Services data breach?

The report to HHS OCR lists 1,062,509 individuals affected.

When was it reported to HHS?

It was submitted to HHS OCR on Jul 7, 2014.

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 Montana Department of Public Health & Human Services 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 Montana Department of Public Health & Human Services.