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A Ukrainian national, Artem Stryzhak, has been extradited to the United States to face charges related to his alleged involvement in Nefilim ransomware attacks. Stryzhak, aged 35, was arrested in Spain in June 2024 and arrived in the U.S. on April 30, 2025. Federal authorities accuse him of participating in a conspiracy to commit fraud and related activity, including extortion, through the use of Nefilim ransomware between 2018 and 2021. He is scheduled to appear for arraignment in the U.S. District Court for the Eastern District of New York.

Stryzhak and his co-conspirators are accused of targeting high-revenue companies in the U.S., Canada, and multiple European countries, including France, Germany, Australia, the Netherlands, Norway, and Switzerland. The ransomware attacks involved encrypting computer networks, stealing data, and demanding ransom payments in exchange for decryption keys. According to the indictment, Stryzhak had an agreement with Nefilim administrators to use the ransomware in exchange for 20% of the extorted proceeds. The victims included companies spanning various industries, such as engineering consulting, aviation, chemicals, insurance, construction, pet care, eyewear, and oil and gas transportation.

U.S. Attorney John Durham emphasized the international nature of the case, stating that Stryzhak was part of an international ransomware scheme targeting high-revenue companies. Officials said the series of ransomware attacks caused millions of dollars in losses, including extortion payments and damage to victim computer systems. The extradition highlights ongoing international law enforcement efforts to combat ransomware and hold cybercriminals accountable, regardless of their location. Durham added that criminals who carry out such malicious cyberattacks often believe that American justice cannot reach them abroad.

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References :
Classification:
  • HashTags: #Ransomware #CyberCrime #Extradition
  • Company: Nefilim
  • Target: Companies
  • Attacker: Artem Stryzhak
  • Feature: Extradition
  • Malware: Nefilim
  • Type: Ransomware
  • Severity: Major