Security News US charges admin of LockerGoga, MegaCortex, Nefilim ransomware BleepingComputer Daniel Bender Sep 9, 2025 The U.S. Department of Justice has charged Ukrainian national Volodymyr Viktorovich Tymoshchuk for his role as the administrator of the LockerGoga, MegaCortex, and Nefilim ransomware operations.