Justice Dept. Brings New Charges in Ransomware Attacks. Cyberattacks and Hackers, Extortion and Blackmail, Computers and the Internet, United States Politics and Government, Justice Department, JBS SA, Kaseya Ltd, DarkSide (Hacking Group), REvil (Hacking Group), Russia, Poland, Ukraine, Polyanin, Yevgeniy, Vasinskyi, Yaroslav