how to hide a FILE in .jpg image

Few months ago , USA Today

story claimed that al-Qaeda

operatives were sending

out encrypted messages by

hiding them inside digital

photographs [jpg files] on

eBay.

While the claim was never

proved, it is very easy to

hide [or embed] any other

file[s] inside a JPEG image.

You can place video clips

,

pdf, mp3, Office documents,

zipped files, webpage or any

other file format inside a

JPEG image.

And when a suspecting user

[read CIA, FBI] tries to open

that jpeg file [with

concealed information] in

either a photo editing

software or as a thumbnail

inside Windows Explorer, it

would be tough to make out

if this camouflaged jpg file

is different from any

standard jpg image.

Let's say you want to hide a

confidential PDF document

from the tax investigation

officers. What you can do is

convert that file into a

regular jpg image so even if

anyone double-clicks this

file, all he will see is a

preview of the image and

nothing else. And when you

want to work on the actual

PDF, just rename the

extension from jpg to pdf.

Here's the full trick:

Step 1: You will need two

files - the file you want to

hide and one jpg image - it

can be of any size or

dimensions. [If you want to

hide multiple files in one

jpeg image, just zip them

into one file]

Step 2: Copy the above two

files to the C: folder and

open the command prompt

window.

Step 3: Move to the c: root

by typing cd [if the files

are in another folder, you'll

have to change the prompt

to that folder]

Step 4: The most important

step - type the following

command:

copy /b myimage.jpg +

filetohide.pdf

my_new_image.jpg

To recover the original PDF

file, just rename

my_new_image.jpg to

filename.pdf.

Here we illustrated with an

pdf file as that works with

simple renaming. If you

want to apply this

technique to other file

formats like XLS, DOC, PPT,

AVI, WMV, WAV, SWF, etc,

you may have to first

compress them in RAR

format before executing the

copy /b DOS command.

To restore the original file,

rename the .jpg file to .rar

and extract it using 7-zip or

Winrar

Posted in: pc tricks