Hello, I have created a e-book, and I'm in need of some help. I want to prevent my customers from copying, or editing it. I have searched for programs, many of which require me to purchase the full version (I refuse to buy a program that will hardly be used) Is there any free programs I can use, to completely lock my PDF? I have Acrobat Reader & Microsoft Word 2010. Thank you.
Microsoft Office 2010 might work for you. Try: (Office button)-> Prepare -> Mark as Final or (Office button)-> Prepare -> Encrypt Document
Use openoffice, its a free writer/excel/whatever program. open source AND it gives you the ability to encrypt your PDF's for either opening OR just to prevent copying. It's useful AND free. I use it all the time and I love it
I heard there are decryption softwares that can break almost any encryption used by these kind of encryption softwares. Any idea about which one is the hardest to crack?