Quote:
Originally posted by kutulu
If you have the full version of adobe, you can alter pretty much whatever you want as far as text is concerned.
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Not if the author has locked the document or added a watermark. While cracking a .pdf can be done, a .pdf that has been locked in adobe acrobat by the author and then saved and watermarked is 99.9% secure.
There will always be a pimple faced leet AOL kid somewhere who wants to prove that he can "hack" and will say "see i can crack the security on a .pdf!" but it keeps the other 99% of users from bothering. make it require effort and most if not all will get the point.
(as a side note, you can encrypt a .pdf with blowfish, for which there is no ability to crack, but only uncle sam has any reason to even bother to use that feature.)