I think the Amiga was the first place I started seeing virus infections. Some magazine cover disks were also accidentally duplicated with virus infections on them and distributed... then the next month a huge apology and the utilities to remove it was on the next cover disk. Those were the days.

I remember reading about an Amiga virus that would trick an A500 into thinking it had 4 floppy disk drives connected and would make it draw to much power to certain parts and damage them. I'm not sure if that was actually true, but I did hear it from more than one source. And actually, when you have a fixed hardware platform like the A500, or today's consoles, it makes it much easier for someone to target the hardware specifically, whereas in PCs they are very modular with no 2 PCs ever having identical hardware.