The First Virus

Elk Cloner is the first virus on microcomputers were on the Apple II, circa 1982.It is a "boot sector" virus. Rich Skrenta, who was ninth-grade student wrote this virus.
Elk Cloner was stored on floppy diskettes. When a computer booted from a floppy disk infected with Elk Cloner, the virus would start, and would subsequently copy itself to any uninfected floppy disk that was accessed. Because computers of that time had dual floppy disk drives, and because diskettes were often passed around among friends. And the other major part is on every 50th booting, the virus would display a short "poem".

"It will get on all your disks
It will infiltrate your chips
Yes, it's Cloner!

It will stick to you like glue
It will modify RAM too
Send in the Cloner!"