The history of a computer virus
A computer virus is the program which reproduces itself and can carry out self-multiplication of itself, after rewriting other programs.
"Vampire Worm (vampire worm)", "Creeper (KURIPA) etc.", etc. were already checked in the 1970s.
The early virus had the simple thing in use which displays the message about scribble.
Diffusion of a virus which performs direct destructive activities like present started, after it enters in the 1980s.
A virus has also continued evolving with evolution of a computer since then, and viruses various to a thing with powerful infection power or the thing which performs wicked destructive activities have been born.
Recently, in the case of the latest virus which has enlivened the world, the criminal is considered that it may be a pro's programmer and may be the "high-tech criminal for pleasure" which is looked at and enjoying the noise.