- State
- CA
- Covered entity type
- Healthcare Provider
- Individuals affected
- 9,309
- Business associate present
- No
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
OCR description
The covered entity (CE), Guardant Health, Inc., reported that a workforce member inadvertently made the protected health information (PHI) of 9,309 individuals viewable over the Internet. The PHI involved included names, ages, medical record and identification numbers, and treatment information. The CE notified HHS and the affected individuals. In response to the breach, the CE sanctioned its workforce member and implemented additional technical safeguards to better protect its PHI. OCR provided the CE with technical assistance regarding the HIPAA Breach Notification Rule.
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.