Stegnography is the method by which data or files can be hidden in Image files or any other type of file.
For Example : We can send a stegnographic message to our friend by email which can be secretly shared only between you and your friend. If any other person accidentally or intentionally accessed your mailbox he can never figure out what you have sent in that image.
It is not a rule that we must hide data in image files only, we can also hide data in MP3 and Video files too.
Now I m going to explain how You can do it Without Using Any Software ...
Here I m going to hide an Text file(Notepad ) into An Image File ...
Follow The Steps :
1) First of All Place Both the files which you wanna to hide and Other file with which you wanna to hide it..
for Example: I have put an text file as "gaurav.txt" and another file "kpg.jpg" and I m going to hide text file into Image file.
2) Now open Command Prompt ,GoTo start--->Run-->cmd (Sometimes It is necessary to run cmd as Administrator ...) .
then Set the Path where You have put your files.
then Write the Command :
copy /b < Filename Behind which wanna to hide with Extension>+
like: copy /b kpg.jpg+gaurav.txt final.jpg
3) Then you will get an msg on cmd screen as : 1 file(s) copied ...
Now you can check on that place You will get one more file ...
Now You when You open both kpg.jpg and final.jpg ,You cant make a Little bit difference among these.
4)Now How You will get Your hidden file later ...??
So for it open that "final.jpg" with notepad ..
And At last Of the file You will get Your Message Which You have Hidden ...
To go At Last Of the File You can Use Short cut Key :: "Ctrl+End"
Let Chk out...
Its First Notepad File ::
And Here I have opened final.jpg with notepad and the CUrsor at The End of The File .. You can see At last Line ... Contain Same Msg like Upper File ...
That's All.
Keep Smiling :)