Oleksii Oleksiyovych Lytvynenko, a 43-year-old Ukrainian national, was extradited from Ireland to the United States in late October 2025 to face charges related to his role in the Conti ransomware conspiracy. Between 2020 and June 2022, Lytvynenko allegedly helped deploy Conti ransomware, which hacked networks, encrypted data, and extorted ransom payments, affecting over 1,000 victims in 47 US states and 31 countries, generating at least $150 million in ransom proceeds. He is accused of managing stolen data and ransom communications, including extorting over $500,000 from victims in Tennessee. Arrested by Irish police in July 2023 at the US’s request, Lytvynenko appeared in federal court in Tennessee where he faces up to 25 years in prison for conspiracy to commit computer and wire fraud. This extradition highlights ongoing international collaboration to dismantle global ransomware networks, with more than 180 ransomware criminals convicted in the US since 2020. The Conti group was the top ransomware threat to critical infrastructure in 2021, making this a significant move in cybercrime enforcement.