International Journal of Computer Science Engineering and Technology
Steganography is a technique that allows one to hide binary data within an image while adding few noticeable changes. Steganography is the dark cousin of cryptography, the use of codes. While cryptography provides privacy, steganography is intended to provide secrecy. Privacy is what the users need when they use their credit card on the Internet - They don't want their number revealed to the public. For this, the user use cryptography, and send a coded pile of gibberish that only the web site can decipher. Though their code may be unbreakable, any hacker can look and see they've sent a message.