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Ukrainian National Pleads Guilty in Nefilim Ransomware Conspiracy

Ukrainian National Pleads Guilty in Nefilim Ransomware Conspiracy

First seen 19 Dec 2025, 22:56 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

Artem Aleksandrovych Stryzhak, a 35-year-old Ukrainian national residing in Barcelona, Spain, pleaded guilty to conspiracy charges related to the deployment of Nefilim ransomware. This ransomware targeted large U.S. companies, leading to significant financial losses, and authorities are offering an $11 million reward for a fugitive co-conspirator.

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