Hi, I just downloaded Adobe Acrobat Pro DC and I am using the trial version. I have an issue with the protection feature. I use "Encrypt with password" to protect my PDF files from editing or printing. The encryption works fine and it is perfect, but I just found the anyone can cancel this encryption and print or copy the contents of the file by just open the PDF file using FireFox browser. I tried it by myself and the file I encrypted was without any protection as I managed to copy and print the content of the PDF file. I don't know how this is possible, but now I am concerned about upgrading my account and buy Adobe Acrobat Pro DC to protect my PDF files. I hope you can explain the problem or the reason behind the ability of FireFox to decrypt protected PDF files
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