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Ransomware gang claims they stole 6TB of Change Healthcare data

ID: 6c0f42d3-8ea1-5565-b0c8-61883780e961

STIX ID: report--6c0f42d3-8ea1-5565-b0c8-61883780e961

Feed Name: Bleeping Computer

Threat Score
85/100

Date Published: 2024-02-28

Date Updated: 2026-04-20

Author: Sergiu Gatlan

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BlackCat/ALPHV has claimed responsibility for a large-scale ransomware attack on Optum/Change Healthcare, alleging theft of ~6 TB of sensitive data (medical records, insurance/claims data, PII and source code) impacting more than 70,000 pharmacies and numerous healthcare partners; the incident has caused service outages and prompted warnings from U.S. federal agencies.

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