One Medical Seniors Reports Breach Involving Third-Party File Storage
Summary
One Medical Seniors reported unauthorized access to a third-party file storage system between June 8 and 11, 2026, affecting patients in several U.S. cities. ShinyHunters claimed responsibility and alleged 8.8 TB was compromised; the main EHR system was not affected.
Key points
- One Medical Seniors disclosed a breach involving unauthorized access from June 8 to June 11, 2026.
- Patients in several U.S. cities were affected.
- The breach involved a third-party file storage system used for archiving data.
- ShinyHunters claimed responsibility and alleged that 8.8 TB of data was compromised.
- One Medical said its main electronic health records system was not affected.
Article Details
- Victim Organization
- One Medical Seniors
- Victim Domain
- onemedical.com
- Incident Type
- Data breach involving unauthorized access to a third-party file storage system used for archiving data
- Incident Date
- 2026-06-08
- Disclosure Date
- 2026-06-13
- Affected Data Size
- ShinyHunters claimed that 8.8 TB of data was compromised; this was not confirmed in the supplied content.
- Operational Impact
- Patients in several U.S. cities were affected. One Medical stated that its main electronic health records system was not affected.
- Claim Status
- claimed