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Listen--do you want to know a secret? Then you've got to know the code, and this guide reveals what any youngster needs to know to become a secret agent kid. In a logical, easy-to-follow progression, it takes children from simple letter scrambling to more sophisticated systems that can baffle nosy adults. There's plenty of space to write, too, so that budding spies can practice and perfect their work before moving to the next level. There's the Pigpen Code (it's as clear as mud to the uninitiated), the dots and dashes of Morse Code, and a fun technique based on little drawings of dancing men. Kids will also learn about the "decoder wheel," professional codebreakers, hidden writing (including invisible ink), and much more. The author lives in Toronto, Ontario.
Can flashing lights send out a secret message? Did a famous spy use sketches of butterflies to hide messages? Can a digital photo hide a secret code? For centuries, spies have used many different ways to pass secret information. Codes and ciphers keep information safe from the enemy. Author Susan K. Mitchell uncovers the secrets to the amazing world of spy codes and ciphers.
Contains a collection of activities and games associated with being a spy including conducting surveillance, writing in code, and creating disguises.
Learn to create secret codes using symbols, dots, lines, rearranged letters and more.
Presents history, trivia, and code-breaking tales in a guide book to the world of secret writing that includes examples of a variety of codes and ciphers.
The New York Times bestselling author of Dark Invasion and The Last Goodnight once again illuminates the lives of little-known individuals who played a significant role in America’s history as he chronicles the incredible true story of a critical, recently declassified counterintelligence mission and two remarkable agents whose story has been called "the greatest secret of the Cold War." In 1946, genius linguist and codebreaker Meredith Gardner discovered that the KGB was running an extensive network of strategically placed spies inside the United States, whose goal was to infiltrate American intelligence and steal the nation’s military and atomic secrets. Over the course of the next decade, he and young FBI supervisor Bob Lamphere worked together on Venona, a top-secret mission to uncover the Soviet agents and protect the Holy Grail of Cold War espionage—the atomic bomb. Opposites in nearly every way, Lamphere and Gardner relentlessly followed a trail of clues that helped them identify and take down these Soviet agents one by one, including Julius and Ethel Rosenberg. But at the center of this spy ring, seemingly beyond the American agents’ grasp, was the mysterious master spy who pulled the strings of the KGB’s extensive campaign, dubbed Operation Enormoz by Russian Intelligence headquarters. Lamphere and Gardner began to suspect that a mole buried deep in the American intelligence community was feeding Moscow Center information on Venona. They raced to unmask the traitor and prevent the Soviets from fulfilling Soviet Premier Nikita Khrushchev’s threat: "We shall bury you!" A breathtaking chapter of American history and a page-turning mystery that plays out against the tense, life-and-death gamesmanship of the Cold War, this twisting thriller begins at the end of World War II and leads all the way to the execution of the Rosenbergs—a result that haunted both Gardner and Lamphere to the end of their lives.
“A comprehensive exploration of spying in its myriad forms from the Bible to the present day . . . Easy to dip into, and surprisingly funny.” —Ben Macintyre in The New York Times Book Review The history of espionage is far older than any of today’s intelligence agencies, yet largely forgotten. The codebreakers at Bletchley Park, the most successful WWII intelligence agency, were completely unaware that their predecessors had broken the codes of Napoleon during the Napoleonic wars and those of Spain before the Spanish Armada. Those who do not understand past mistakes are likely to repeat them. Intelligence is a prime example. At the outbreak of WWI, the grasp of intelligence shown by US President Woodrow Wilson and British Prime Minister Herbert Asquith was not in the same class as that of George Washington during the Revolutionary War and eighteenth-century British statesmen. In the first global history of espionage ever written, distinguished historian and New York Times–bestselling author Christopher Andrew recovers much of the lost intelligence history of the past three millennia—and shows us its continuing relevance. “Accurate, comprehensive, digestible and startling . . . a stellar achievement.” —Edward Lucas, The Times “For anyone with a taste for wide-ranging and shrewdly gossipy history—or, for that matter, for anyone with a taste for spy stories—Andrew’s is one of the most entertaining books of the past few years.” —Adam Gopnik, The New Yorker “Remarkable for its scope and delightful for its unpredictable comparisons . . . there are important lessons for spymasters everywhere in this breathtaking and brilliant book.” —Richard J. Aldrich, Times Literary Supplement “Fans of Fleming and Furst will delight in this skillfully related true-fact side of the story.” —Kirkus Reviews “A crowning triumph of one of the most adventurous scholars of the security world.” —Financial Times Includes illustrations
"As gripping as a good thriller." --The Washington Post Unpack the science of secrecy and discover the methods behind cryptography--the encoding and decoding of information--in this clear and easy-to-understand young adult adaptation of the national bestseller that's perfect for this age of WikiLeaks, the Sony hack, and other events that reveal the extent to which our technology is never quite as secure as we want to believe. Coders and codebreakers alike will be fascinated by history's most mesmerizing stories of intrigue and cunning--from Julius Caesar and his Caeser cipher to the Allies' use of the Enigma machine to decode German messages during World War II. Accessible, compelling, and timely, The Code Book is sure to make readers see the past--and the future--in a whole new way. "Singh's power of explaining complex ideas is as dazzling as ever." --The Guardian
This highly readable text provides a clear exposition of the implications and interpretations of the fundamentals of discrete information theory and coding. Focusing on the results of practical applications, the authors cover information measures, Shannon's channel capacity/coding theorems, and source and channel coding concepts. The clear, accessible text will serve as an introduction to the field for professionals and students in communication systems, computer science, and electrical systems science.
"Information about intelligence gathering and spy agencies for children"--