0
votes
0answers
33 views

How to protect Adobe Acrobat XI files?

I want to protect the content of some PDF files (copy, edit, print). I tried to use password protection but it can be broken easily using tools like this. Looks like they use standard encryption ...
0
votes
0answers
330 views

How to remove password of a password-protected PRC?

I know the password, I just want to remove it. Mobidedrm couldn't do this (it can remove DRM from files that are not password-protected only though). any idea? Sample file on DropBox passwd of ...
1
vote
0answers
109 views

Encrypting or protecting my ID for all applications

Problem I work in an environment where I have to use my LDAP ID+pass for running various applications as admin, sending emails, or for letting the application access the internet and so on.. A ...
0
votes
1answer
610 views

What free tool can be used to password-protect .pdf files without displaying password during entry?

What is a "good" tool to encrypt (password protect) .pdf files? (without being required to buy additional software; the protection can be created under linux but the password query should work on ...
0
votes
2answers
779 views

How can I password-protect my USB stick for access on multiple platforms, without admin rights?

I left my USB stick at college over the weekend and I was lucky enough to get it back on Monday. I decided to back up and password protect in case it happens again. Back up all done, I went to ...
4
votes
1answer
1k views

What is the best way to protect e-book?

I am a writer and want to sell my ebooks on the web. But recently there are many bad buyers who remove the protection, modify the contents, and share them on the web. My related question: Is it true ...
4
votes
2answers
722 views

Is it true that strongly-password-protected PDF can be cracked?

I want to protect my PDF with a strong password. But I heard that it can be cracked. Is it true that strongly-password-protected PDF can be cracked? Edit: This is my real scenario. I want to ...