Hiding data behind images

Because we all have secrets..
Steganography is the art and science of hiding
messages, Images, Data etc. in such a way that
no one, apart from the sender and intended
recipient, suspects the existence of the Data-
security through obscurity. By using this small
and neat trick you can hide whatever data you
want behind any image of your choice without
reducing its quality, In the following tutorial I
will show you how you can hide data behind
images without using any exotic software.
(Good old Winrar or Winzip is sufficient)
1. Create a folder in your C drive and name it
as “hide”(Using Root Directory will make this a
bit easier).
2.Now you can put anything and everything
you want to hide in this folder. Text
files,images,executables (ANYTHING).Also, put
the image behind which you want to hide the
files in the same directory, say “image.jpg”.
3.After putting everything you want to hide in
the “hide” folder, Right click on it, and click
“Add to Hide.rar” or “Add to archive”. Our goal
is to create a .rar file of the “Hide” folder.
Now you should see the “hide.rar”created in
the same directory along with the folder.
4. Now we need to open up command prompt
and change the working root directory to your
current directory and type the following
commands.(First change directory then create
the output file).(Remember “C” is capital in “C:
\\”)
►cd C:\\
►Copy /b image.jpg + hide.rar output.jpg
Here “image.jpg” is the image behind which
you want to hide the rar file.
“hide.rar” is the file containing the files to be
hidden.
“output.jpg” is the output file that we want. It
contains the hidden files, but looks like an
image
After executing the following command, we will
see an extra image called “output.jpg” created
in the same directory.(Note that it’s size is size
of image.jpg +size of hide.rar)
Now you can delete all the files except
“output.jpg”. If you double click the file, it
opens a normal image. But you can see the
hidden files by opening the file with winrar.
(Right Click->Open With->Choose WinRar.)
That’s It! Now you can send this image to
anyone, what others will see is just a regular
image but if the recipient knows, s/he will be
able to access any secret information
privately.This tutorial can be used for any type
of files like mp3,wmv,txt etc. since anything
can be put into a Rar file.
Although you may want to keep the files to be
hidden as small as possible since it wouldn’t
be very subtle if you try hiding a 15 Gb setup
file for the game ‘Crysis 3′ behind a 5Kb smiley
picture.