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ALPHV/BlackCat claims responsibility for Change Healthcare attack

ID: efb79a39-732e-5898-baf1-8f33dfcf5bb6

STIX ID: report--efb79a39-732e-5898-baf1-8f33dfcf5bb6

Feed Name: The Register (Security)

Threat Score
85/100

Date Published: 2024-02-29

Date Updated: 2026-04-26

Author: Jessica Lyons

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ALPHV/BlackCat has claimed responsibility for a February 2024 ransomware attack on Change Healthcare that disrupted thousands of U.S. pharmacies and hospitals and alleges the theft of terabytes and millions of records; UnitedHealth and Change Healthcare are investigating with law enforcement and third-party responders, while U.S. agencies (FBI/CISA/HHS) warned the healthcare sector to implement mitigations.

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