Sergey Vladimirovich Cherkasov
Russian citizen from Kaliningrad, alleged spy / From Wikipedia, the free encyclopedia
Sergey Vladimirovich Cherkasov (Russian: Сергей Владимирович Черкасов), also known as Victor Muller Ferreira,[1] is an alleged Russian intelligence officer working for the GRU, whose true identity was revealed by the Dutch General Intelligence and Security Service in 2022.[2][3][4] He was first sentenced by a Brazilian federal court to 15 years in prison for using a forged Brazilian government-issued document,[5] but the sentence was later reduced to 5 years and 2 months.[6]