Artem Aleksandrovych Stryzhak, a Ukrainian national, was sentenced to 70 months in prison for participating in ransomware attacks targeting hospitals, government entities, businesses and law firms between 2018 and late 2021. He was involved with Nefilim and Hive ransomware groups that attacked about 1,500 victims worldwide.
Where
Federal, Eastern District of New York; Stryzhak arrested in Spain in June 2024, extradited to United States in April 2025; attacks targeted victims in Texas, New York, Ohio, Illinois, Missouri, France
When
Oct. 27, 2026
Sources
Reported by 2 outlets
Taxes and money
The sources don't state an effect on taxes. They do state these figures.
Ransom reward for information leading to arrest or conviction of co-conspirator Volodymyr Tymoshchuk$11 million1Who pays or receives it: U.S. authorities
Losses from Nefilim ransomware attacksMore than $100 million12Who pays or receives it: Victim companies and organizations
Who's involved
Artem Aleksandrovych StryzhakUkrainian national sentenced for ransomware attacks
Volodymyr TymoshchukAlleged co-conspirator, still being sought
Joseph Nocella Jr.U.S. attorney for the Eastern District of New York
Brett LeathermanFBI's Cyber Branch Operations Director
Gregory W. KehoeU.S. Attorney
Justice DepartmentAnnounced sentencing
The facts
Stryzhak was sentenced to 70 months in prison for ransomware attacks from mid-2018 to late 2021.12Stated by 2 sources
He was arrested in Spain in June 2024 and extradited to the United States in April 2025.12Stated by 2 sources
Stryzhak pleaded guilty to cybercrimes in late 2025 and December 2025 respectively.12Stated by 2 sources
Nefilim and Hive ransomware groups attacked approximately 1,500 victims worldwide.12Stated by 2 sources
Stryzhak's victims included hospitals, government entities, law firms, a dentist office, oil and gas company, and businesses in Texas, New York, Ohio, Illinois and Missouri.12Stated by 2 sources
The ransomware groups primarily targeted companies in the United States, Canada and Australia with more than $100 million in annual revenue.12Stated by 2 sources
Authorities are seeking Stryzhak's alleged co-conspirator Volodymyr Tymoshchuk with an $11 million reward.1
Who said what
These are statements and claims made by the people involved. They are reported, not verified.
Joseph Nocella Jr., U.S. attorney for the Eastern District of New York Ransomware attacks wreak enormous havoc, harming victim companies and preventing critical facilities from accessing data.1
Brett Leatherman, FBI's Cyber Branch Operations Director Stryzhak is a prolific cybercriminal who worked with multiple ransomware groups and caused more than $100 million in losses.2
Gregory W. Kehoe, U.S. Attorney Disrupting ransomware groups that attacked 1,500 victims and sentencing a defendant targeting healthcare during COVID-19 is significant.2
How they headlined it
The same event, as each outlet put it. Marked words appear in only one outlet's headline.
Prolific Hive and Nefilim ransomware affiliate sentenced to 70 months in prison
These outlets were found through Google News headlines. Google decides which outlets appear there, and they lean mostly one way, so this sheet can only be as balanced as the reporting it was built from. Leanings are AllSides Media Bias Ratings.
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