Horizon House
Disclosed Sep 17, 202135,107 affectedConfirmed
The covered entity (CE), Horizon House, reported that it experienced a ransomware attack that compromised the protected health information (PHI) of approximately 27,823 individuals. The PHI involved included names, dates of birth, drivers’ license numbers, addresses, Social Security numbers, claims and financial information, diagnoses, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards to better protect its PHI. OCR provided technical assistance regarding the HIPAA Security Rule.
What is known
| People affected | 35,107 (as reported by the organization) |
|---|---|
| Disclosed | Sep 17, 2021 |
| Discovered | Sep 3, 2021 |
| Happened | Mar 2, 2021 |
| Attack | Hacking |
| Data exposed | NamesGovernment IDsHealthInsuranceCredentials and tokens |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
First seen 2026-09-25 (Delaware DOJ), confirmed by Delaware DOJ. Record counts are as reported. Not legal advice.