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Description
This may seem to be an ordinary beginning to an text. It is not. There's a secret message hidden here, in this very paragraph. It's not in view, and its source is modern. But the art of hiding messages is an ancient one, known as steganography.

Steganography is the dark cousin of cryptography, the use of codes. While cryptography provides privacy, steganography is intended to provide secrecy. Privacy is what you need when you use your credit card on the Internet -- you don't want your number revealed to the public. For this, you use cryptography, and send a coded pile of gibberish that only the web site can decipher. Though your code may be unbreakable, any hacker can look and see you've sent a message. For true secrecy, you don't want anyone to know you're sending a message at all.

Description
This may seem to be an ordinary beginning to an text. It is not. There's a secret message hidden here, in this very paragraph. It's not in view, and its source is modern. But the art of hiding messages is an ancient one, known as steganography.

Steganography is the dark cousin of cryptography, the use of codes. While cryptography provides privacy, steganography is intended to provide secrecy. Privacy is what you need when you use your credit card on the Internet -- you don't want your number revealed to the public. For this, you use cryptography, and send a coded pile of gibberish that only the web site can decipher. Though your code may be unbreakable, any hacker can look and see you've sent a message. For true secrecy, you don't want anyone to know you're sending a message at all.