- State
- MA
- Covered entity type
- Healthcare Provider
- Individuals affected
- 2,363
- Business associate present
- Yes
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
OCR description
Square Medical Group, the covered entity (CE), reported that an employee accidentally sent an email communication without using the blind carbon copy function. This affected the protected health information (PHI) of 2,363 individuals. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. The PHI involved included names and email addresses. In its mitigation efforts, the BA strengthened its administrative safeguards and retrained its staff on the requirement to protect and secure PHI.
Change history
- Sep 23, 2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.