HHS OCR report · 2015
Middlesex Hospital data breach
OCR report facts
- Covered entity
- Middlesex Hospital
- Entity type
- Healthcare Provider
- State
- Connecticut
- Individuals affected
- 946
- Submission date
- Dec 4, 2015
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
Four Middlesex Hospital employees responded to a phishing email, resulting in the disclosure of the protected health information (PHI) of 945 individuals. The information accessed included patients’ names, addresses, dates of birth and social security numbers. The covered entity (CE), provided breach notification to HHS, affected individuals, and the media. The CE also set up a dedicated call center to answer questions for affected individuals and provided affected individuals with 12 months...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Middlesex Hospital data breach?
The report to HHS OCR lists 946 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Dec 4, 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: Email.
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 Middlesex Hospital 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 Middlesex Hospital.