Mobipocket .PRC ebooks (MOBI) can have DRM protection. You don't need to be a hacker to crack MOBI PRC DRM. Just use a MOBI PRC DRM removal plug-in for
Calibre. Besides removing DRM from MOBI .PRC files, Calibre can convert Mobipocket files to other ebooks formats, so you can read Mobipocket .PRC ebooks whether you use
Kindle,
Sony Reader,
Nook or some other reader.
Download Calibre DRM removal plug-ins:
ebook DRM removal tools archive