- 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
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
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
- 9/23/2026Added to OCR's archive list
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.