By dMG/dS! for asciiarena.com
By dMG/dS! for asciiarena.com
The SCA Virus was probably the first Amiga virus (1987). It became extremely common, and later SCA released a software to remove the virus.
There were many clones of the virus with cool names like 666, AIDS, Bad Bytes 4, Big Boss, Deniz Cool, Disk-Terminator, KarlMarx, LSD, MAX and NASA.

C64 BBS-graphics by Deekay, 1997. At the time it was popular to hack Calling Cards from AT&T to make free calls around the world. via