Moin, moin,
(so we say in North Germany!)

the KN7000 and also the other KN-keyboards have the soundsamples and most of the operation systems burned in IC roms. It's not possible to get a virus in there. But the software for updating could have a virus. But if it would be so, you only have to update a clean software, and than all is ok again. There's no chance to attack something of the internal systems. (I hope, my English is OK)

Best regards

Crysyl