What an interesting thought!
I'm with Richard on this one, someone who can disassemble code is going to get his kicks from Windows, Microsoft or the Pentagon. The world will not care if a few Kn7000 owners are perplexed, if there are headlines to be made elsewhere.
And windows viruses are coded for the relevant microsoft kernels and dlls and would not work on a keyboard operating system. But maybe they could be made to hide in a technics file, not to attack the keyboard, but to attack the windows that the files are downloaded to?
Besides the virus would have to transfer from the SD card/Custom/Composer? flash area to the operating system flash area, and that may not be possible without the system flash installation routine, unless there is a back door in the code somewhere.
It would be a first though...
fancy turning off the auto accompaniment every time you touch a panel memory?
turning all volumes to zero when you press the start button?
jumbling up all the program numbers in the styles at random so you get rap when you press waltz?
pressing disk load gives a complete initialisation?
hmmmm...
now where's my copy of Borland and SoftICE?