Breachesby GlyphCommunity Health Systems
Disclosed Aug 18, 20144,500,000 affectedConfirmed
Chinese APT group steals data on 4.5 million hospital patients
Community Health Systems told the SEC that an advanced persistent threat group from China attacked its network in April and June 2014 and copied non-medical patient identification data on about 4.5 million people referred to or treated by its affiliated physicians.
What is known
| People affected | 4,500,000 (as reported by the organization) |
|---|---|
| Disclosed | Aug 18, 2014 |
| Discovered | Jul 2014 |
| Attack | Hacking |
| Data exposed | NamesAddressesSocial Security numbersDates of birthPhone numbers |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
First recordedby seedSource
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.