Historians _are still debating when the first computer virus really appeared. We know a few things for certain, however: the first computer, which _was__ generally considered to have been invented by Charles Babbadge, did not have any viruses. The first computer virus was a program called “Elk Cloner”. It was created by rich Skrenta, a computer programmer who studied at high school at the time. This virus _was___created in 1982. “Elk Cloner” attached itself to the Apple DOS 3.3 operating system and ___was__ later spred by a floppy disk. When the virus was created, it __was_internationally made as a joke by a high school student, who _input the virus into a game in which the virus set off after the 50th time of using the game. When the virus set off, a blank screen appeared and displayed a poem about the virus. The computer then became infected. - не везде уверена. простите, если что не так!