Chaos Claims Publication of 1.5 TB of Astrana Health Patient Data
Summary
The ransomware group Chaos reportedly claimed to publish 1,500 GB of Astrana Health patient data and diagnoses. The monitoring post says the claim is unverified.
Key points
- The post attributes the claim to the Chaos ransomware group.
- Astrana Health, a US healthcare organization, is listed as the victim.
- The group reportedly claimed to publish patient data and diagnoses for millions of people.
- The claimed exposed data volume is 1,500 GB.
- The post says management withdrew from a deal to save money.
- The monitoring source says it cannot confirm the group's claims.
Article Details
- Victim
- astranahealth.com
- Victim Domain
- astranahealth.com
- Claim Date
- 2026-10-09
- Encryption Status
- Unknown; the source does not report whether systems or data were encrypted.
- Exfiltration Status
- The ransomware group reportedly claimed that patient data was exposed; the source says the claim is unverified and does not independently confirm exfiltration.
- Exfiltrated Data
- Patient data and diagnoses, reportedly published in full; unverified.
- Exfiltrated Size
- 1,500 GB, as reported by the source; unverified.
- Ransom Demand
- None reported.
- Leak Status
- The source reports that the group claimed the data was published. The claim and authenticity of the data are not independently confirmed.