Exhibit #1: Yaroslav Vasinskyi , the 22-year-old Ukrainian national accused of being REvil Affiliate #22. Vasinskyi was arrested Oct. 8 in Poland, which maintains an extradition treaty with the United States. Prosecutors say Vasinskyi was involved in a number of REvil ransomware attacks, including the July 2021 attack against Kaseya , a Miami-based company whose products help system administrators manage large networks remotely.