In 1993 I created a very specific antivirus on Atari ST to eradicate a very common virus that plagued our floppy disks: GHOST.

Ghost was considered benign by many people, because the only thing it did was to reverse the Y axis of the mouse every 10 infections. It was so common that some people were used to this Y-axis inversion when using their ST everyday.

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@fenarinarsa This is a great story! And I do remember Ghost - I don't think I encountered it as much as some other bootsector viruses on the ST, but it certainly made an appearance.

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