How to hide a file behind a image.

This technique is called as Stenography. It involves hiding data behind images so that only the intended recipients can read the message being sent.

There are so many S-tools available to hide data behind images. But here you don't need any tool for this.

We'll use command prompt for this. So here we go:

1. Firstly add the data files to a single .rar file and place a image file in the directory containing the rar file.

2. Press windows key + r.

3. Type cmd and press enter. It will open black box.

4. Select the Disk Drive by writing drive_name: and peress enter. E.g. desktop: or c: or d:. Now type the command copy /b <Image.jpeg> + <File.rar> <New_name.jpeg>. And press enter and its done.

Here the folder Data is firstly added to archive

Secret is the new image created containing Data.rar archive

Note: Don't include < > while running the command. These sign(s) are only enclosing a file_name with it's extension.

Now you would like to know how to excess that hidden file.

What you have to do is only to open that image file with winrar. It will open the rar file hidden behind image file.

For that:

1. Right click on image file containing the hidden rar file.

2. Goto Open with and chose Winrar. And the hidden rar file is opened.

Note: Don't make winrar a default program to open that file. Else it will open the hidden rar file whenever you open it by double clicking on it.