Thread: Protecting an eBook on CD
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Old 11-02-2009, 12:32
sellen sellen is offline
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Unhappily, by my reckoning, there is no efficient methods to protect PDF file^_^
These is a hole in any version of Acrobat's DRM_check_circle, from 4.0 to 9.2.0.
see the first&second result in google.cn with this:Ȩ�ޱ�©��
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