Prolific Hive And Nefilim Ransomware Affiliate Sentenced To 70 Months In Prison

www.itsecuritynews.info • October 27, 2026

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Artem Stryzhak participated in a series of ransomware attacks on hospitals, government entities and law firms from the middle of 2018 to late 2021.

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Prolific Hive and Nefilim ransomware affiliate sentenced to 70 months in prison

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Ukrainian Ransomware Affiliate Sentenced to 70 Months for Attacks on Critical Infrastructure Artem Stryzhak, a 36-year-old Ukrainian national, was sentenced to 70 months in prison for his role in ransomware attacks targeting hospitals, government entities, and businesses worldwide from 2018 to 2021. He was involved with the Nefilim and Hive ransomware groups, extorting millions from victims, including healthcare providers during the COVID-19 pandemic. Stryzhak was arrested in Spain in June 2024 and extradited to the U.S. in April 2025, pleading guilty to conspiracy to commit fraud in December 2025. His actions contributed to over $100 million in losses. The U.S. State Department is offering up to $11 million for information leading to the capture of his co-conspirator, Volodymyr Tymoshchuk, who remains at large. The investigation highlighted the significant impact of ransomware on critical services and the ongoing efforts to combat cybercrime. 18 sources 29

Extracted Entities

Attack Types (1)

Industries (1)

MITRE ATT&CK (1)

T1486 - Data Encrypted for Impact

Ransomware Groups (2)

Nefilim Prolific Hive