USACS Management Group
Disclosed May 8, 20188 years ago15,552 affectedConfirmed
The business associate (BA), USACS Management Group, reported that multiple employees were the victims of an email phishing attack that compromised the protected health information (PHI) of 15,552 individuals. The PHI involved included names, addresses, health insurance information, Social Security numbers, diagnoses/conditions, lab results, medication information, and other treatment information. The BA notified HHS, affected individuals, the media, and provided substitute notice on its website. The BA also offered complimentary identity theft protection services to those affected. In response to the breach, the BA implemented additional administrative, technical, and security safeguards to better protect PHI. Employees were also retrained on email security.
What is known
| People affected | 15,552 (as reported to HHS) |
|---|---|
| Disclosed | May 8, 2018 |
| Happened | Mar 9, 2018 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: USACS Management Groupoag.ca.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): USACS Management Group (Business Associate, OH)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | May 8, 2018 | |
| HHS archivetotal | May 8, 2018 | 15,552 |
History of this record
- 2026-09-25 · sector: other to health · backfill source
- 2026-09-25 · attack: unknown to hacking · backfill source
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · records_basis: empty to hhs · backfill source
- 2026-09-25 · records: empty to 15552 · backfill source
- 2026-09-25 · summary: empty to The business associate (BA), USACS Management Group, reported that multiple employees were the victims of an email phishing attack that compromised the protected health information (PHI) of 15,552 individuals. The PHI involved included name · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.