How to Hide Data in Audio Files

 

As you know, Mr. Robot is one of the best TV shows through years,

The answer is that Eliot is hiding the data on those CDs. He is actually copying music to those CDs, then embedding encrypted information on them that only he can recover. So,anyone who finds them will see and hear only audio and will be unable to find or retrieve the hidden information. 

Although, in general, hackers use Linux to hack for many good reasons, DeepSound was developed for Windows. In this case, we will be using it on a Windows 7 system, but it can be used on just about any Windows OS.

1.Download & Install Deep Sound

To begin, we need to navigate to the DeepSound website and download the software

2.Deep Sound Interface

Once you have completed the installation, you should be greeted by a screen like the one below. Notice that on the left hand side of the screen it is displaying the directory structure of my C: drive. By clicking on the down arrow next to the C: drive above my directory structure, I can browse to other drives or USB devices on my system.

The files to the left will be my "carrier" audio files. In other words, these are the files I will use to hide my data in.

3.Settings

If I click on the Settings icon on the top bar, it will bring up a window like that below. I should set my default language (the only other choice besides English is Slovak), my output directory, and my output format. This software package only works with .flac or .wav files. This means that you can't use .mp3 files. This is presumably because .mp3s are compressed and the other two formats are not.

4.Select Audio Files

Next, we need to select audio files to hide the data in. As most of my music, probably

like yours, is in .mp3 format, those won't work. Notice that I have some Nora Jones in

.flac format that I will use here. (Generally, audiophiles prefer .flac as its quality is

superior, but the size is much greater as it is uncompressed. That's why most mobile

audio devices use .mp3, they are much smaller files.)

I double-click on the audio file and it prepares it for use to hide my files in.

Next, click on the "Add files" icon on the top bar. This will prompt you to add the files

you want to hide within the audio file. Here, I have a file named Shayla.doc that I want to

hide within the Nora Jones audio file.

6.Encode

When I click on Shayla.doc, it adds it to the right window. Now, I need click on the 

"Encode" icon on the top icon bar.

My Shayla.doc file is now encrypted and hidden with my audio file! Not only with this

file look and sound like a normal audio file, but if anyone wants the information hidden

in it, they will need to decrypt it with the password known only to me.

In the case of Elliot in Mr. Robot, he now took these audio files and burned them to a CD,

but that isn't necessary. Presumably, he is doing that to take another step to secure these

files in the case that his computer is ever confiscated and investigated. Any investigation

is unlikely to listen to his music CDs.

7.Decode

Eventually, Elliot, or the person the information is intended for, will need to 

decode the hidden information. Simply click on the audio file and then the 

"Extract secret files" icon. When you do, it will prompt you for a password. 

Enter the password you created in Step #3, hit "OK," and the hidden file will 

appear in the right hand window.

Now, you can read the hidden, secret message using the appropriate 

software that the message was created in. In this case, it would be 

Microsoft Word or any other software capable of opening a .doc file.

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