HHS OCR report · 2015
OH Muhlenberg, LLC data breach
OCR report facts
- Covered entity
- OH Muhlenberg, LLC
- Entity type
- Healthcare Provider
- State
- Kentucky
- Individuals affected
- 84,681
- Submission date
- Nov 13, 2015
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Desktop Computer, Email, Laptop, Network Server, Other Portable Electronic Device
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The FBI notified the covered entity (CE), OH Muhlenberg, LLC, on September 16, 2015, that its information system had been infected with malware known as “QuakBot.” Based on the CE’s internal investigation, it determined that the malware may have been present on its system as early as January 1, 2012 and may have affected its entire patient database of 84,506 patients. The types of protected health information (PHI) involved included names, dates of birth, addresses, phone numbers, driver’s ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the OH Muhlenberg, LLC data breach?
The report to HHS OCR lists 84,681 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 13, 2015.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Desktop Computer, Email, Laptop, Network Server, Other Portable Electronic Device.
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 OH Muhlenberg, LLC 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 OH Muhlenberg, LLC.