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Xpounded Simple Steganography
Steganography is the science of hiding information - usually in plain sight.
Took a while to convice myself this is ok to publish - nothing new here, all of this information in one form or another (and way more detailed) is easily obtained on the web (key-word steganography), so...
Take a look at these three gifs.
They may appear the same, at least the ones you see, but they are very different.
You can compare their sizes (Windows=right-click, properties) to see the difference.
The left gif (No.1) is a picture of a blue ball, and so are the other two.
But the center picture (No.2) also contains a message you can view by saving it to your hard drive and openning it in a text editor (Windows=right-click, open-with, select notepad).
The right picture (No.3 the one you most likely have not seen yet) also contains a text message, but one that has been encoded with our encryption system. Not only does the gif contain encrypted information, but the gif itself has been further hidden by setting its width and height properties to 1 (Hmm... sounds kind of like a gif that could be used for spaceing). I've made it alittle easier for you to ensure yourself that it's there by including a 'hand' cursor when your over it (something you most likly would not do for all uses)
The above was just an example of what can be done using very simple un-sophisticated stegnograhic techniques
Here is a very simple How-To to get you started. Open the image you want to put a message inside of in any editor that is capable of openning and saving binary data in text formt (like any editor using the MS RichTextBox Control). Include your message in the data (play around or do some research to find the best locations to store your message). Save off the new Stegnagraphic image and post for the world to see.
Only those who know where to look, or those who spend their life looking at each new web image structure posted to the web, will retrieve your message.
(Unless the host you are using checks the image structures of their clients images and notifies someone to have a look when a structure anomally is found. likelyhood?)
jpeg, avi, mov, wav, exe, dll, html, and almost any other file you can think of can contain hidden data
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