A Brief History of Security “Well, I never heard it before,” said the Mock Turtle, “but it sounds uncommon nonsense.” —Lewis Carroll, Alice in Wonderland. Secret communication achieved by hiding the existence of a message is known as steganography. The word is derived from the Greek word “steganos,” meaning cov- ered and “graphin” meaning to write. | COMMUNICATIONS ENGINEERING SERIES Bulletproof Wireless Security GSM UMTS and Ad Hoc Security Praphul Chandra Newnes Bulletproof Wireless .
