Cornerstone Healthcare Group Management Services
Disclosed Mar 14, 2024484,957 affectedConfirmed
Cornerstone Healthcare Group Management Services, the business associate (BA), reported that it experienced a hacking incident that compromised the protected health information (PHI) of 484,957 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, drivers’ license numbers, financial information, health insurance information and clinical information. The notified HHS, the affected individuals, and the media. In response to the breach, the BA strengthened its technical safeguards. OCR provided technical assistance to the BA pertaining to the HIPAA Breach Notification and Security Rules.
What is known
| People affected | 484,957 (as reported to HHS) |
|---|---|
| Disclosed | Mar 14, 2024 |
| Happened | Dec 19, 2023 |
| Attack | Hacking |
| Data exposed | NamesHealth |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.
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