Quote:
Originally Posted by eggheadbooks1
...is there anything that prevents the illegitimate sharing of KFX files once initially purchased from Amazon (assuming DRM is not applied)?
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Much of the workings of KFX DRM are still unknown. Software that defeats the DRM used by Amazon's other formats has been available for years, but there is currently no known way of defeating KFX DRM. And so far all e-books delivered by Amazon in KFX format have been encrypted by DRM.
Through testing it has been found that there are at least two "flavors" of KFX DRM:
1. Books that are marked on their web page as "Simultaneous Device Usage: Unlimited" are DRM-free in MOBI or KF8 format. The KFX equivalent of these books is still encrypted by DRM, but they have been found to function when copied to another Kindle device of the same type. So this DRM protects the content from examination and conversion but not from being copied.
2. Books that are
not marked "Unlimited" are locked to the original device using DRM in all Kindle e-book formats, including KFX.