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".
다크 어벤서의 최초 바이러스는 1989년 초에 모습을 드러냈고 "This program was written in the city of Sofia (C) 1988-89 Dark Avenger"라는 문구를 포함하였다.