Dark Avenger's first virus appeared in early 1989 and contained the string, "This program was written in the city of Sofia (C) 1988-89 Dark Avenger".
Перший вірус Dark Avenger'а вийшов на початку 1989 й містив повідомлення «This program was written in the city of Sofia (C) 1988-89 Dark Avenger».