: Automatically Change Security For Multiple PDF's In Acrobat 9 Pro I'm using Acrobat 9 Pro and i have like 100+ .pdf files which i need to add security settings to them. I saw tutorials for

@Sue6373160

You can get this program from my blog to do the exactly what you want.
hwinnapp.wordpress.com/2016/07/14/encrypts-all-your-pdf-files-with-the-same-password/

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@Fox8063795

In Acrobat 9, you have Batch sequences, where you can set the security. This Adobe Blog entry is a description on how to remove security, but setting so has the same steps and uses the same batch elements.

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