I've been attempting to secure a document to prevent the copy - pasting of text, but it doesn't seem to work. I set the password, and then leave unchecked the tick box to enable copying and pasting of text. After saving the document, when I open it in Preview I can still copy and paste text.
I've now tried this with copies of Acrobat Pro 7, Acrobat Pro 9, and Acrobat Pro X - none seem to work properly.
Very frustrating - any help appreciated.