1 Reply Latest reply on Feb 5, 2013 8:50 PM by George_Johnson

    How secure is an encrypted pdf file?

    FormUser Level 1

      I am using Acrobat XI Pro => Require a password to open document => use a password that is 'Best' with the 4 gray rectangles on the right lighting up green => Compatibility: Acrobat X and later, Encryption Level: 256-AES

       

      In other words, the above is the strongest security that Acrobat XI Pro has to offer by way of encryption. But just how secure is this strongest security? Any of the experts here care to give a lay person a feel for the level of security in case the encrypted pdf file gets in the wrong hands?