Breachesby GlyphAllegheny Health Network
Disclosed Dec 3, 2020299,507 affectedConfirmed
The covered entity (CE), Allegheny Health Network, reported that its business associate experienced a ransomware attack affecting the electronic protected health information (ePHI) of approximately 299,207 individuals. The ePHI involved included names, addresses, dates of birth, and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice.
What is known
| People affected | 299,507 (as reported to HHS) |
|---|---|
| Disclosed | Dec 3, 2020 |
| Attack | Hacking |
| Data exposed | NamesHealth |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
First recordedby backfillSource
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.