Digital Image Steganography

Digital Steganography refers to concealing a message in a digital format. Basically it is a way of writing hidden messages so that no one except you and the recipient know that the message exists.The main purpose of this is to create a message that defies detection. Messages may appear as articles, shopping lists, or some other covertext. They have been used all over during World War II, the Cold War etc. 




It makes use of the fact that in many file formats, data might be put in twice or some data may not be important, and the hidden message does not cause noticeable changes to the file. It is also used by people who are being censored by government agencies for criminal reasons. Digital steganography is also related to hidden digital watermarking which is pretty much the same thing but it may be visible or invisible. A good thing to know is that some steganography software is better then others when it comes to concealing messages effectively.


- "Steganography." Wikipedia, the Free Encyclopedia. Web. 05 Dec. 2011. <http://en.wikipedia.org/wiki/Steganography>.
- "Digital Image Steganography: Survey and Analysis of Current Methods (Abbas Cheddad) - Academia.edu." University - Academia.edu. Web. 05 Dec. 2011. <http://umu.academia.edu/AbbasCheddad/Papers/224250/Digital_Image_Steganography_Survey_and_Analysis_of_Current_Methods>.