Steganography: What your eyes don’t see

by Soufiane Tahiri
Oct. 8, 2017 0 comments INFOSEC Institute Encryption & Authentication

Steganography is the art of hiding information to prevent detection of a hidden message. It has been used throughout history by many methods and variation, ancient Greeks shaved heads of messengers and tattooed the secret message, once the heir grew back the message remained undetectable until the head is shaved again. Many ingenious techniques and methods were used by ancient civilizations. Earlier and near World War II invisible inks offered a common form of undetectable writing. An innocent letter could contain a very different message written between their lines.