DAVID KAHN

With a new chapter on computer security issues, this updated and revised history of codes and codebreaking takes the reader from the protocryptography of Egyptian Pharoah Khnuumhotep II through to the speculations of scientists solving messages from outer space.

Why are some people more effective leaders? What makes them more engaging, more influential, and more successful than their peers?In "Cape, Spandex, Briefcase," leadership expert David Kahn tells the story of a motivated young man who yearns to be successful in his new leadership role. He holds the manager title, but is struggling to become an actual leader. After an especially horrific experience, he is sent to a leadership coachbut why is this "expert" working in a comic book shop?With Superman, Spider-Man and their costumed companions serving as paradigms of what it means to be a leader, this book introduces the "Five Superpowers of Leaders" and presents us with practical tools and skills necessary to motivate teams and earn respect.A few endorsements for Cape, Spandex, Briefcase include:" The book is spot on for new leaders and those who want to up their skill set. Kahn clearly understands how relationships are the basis of a successful leader." JOHN BALDONI, Top 50 Inc.com Leadership Expert and author of 13 books including MOXIE: The Secret to Bold and Gutsy Leadership"For anyone who feels overwhelmed or even plateaued at work, pick up Cape, Spandex, Briefcase and prepare to fly!" MARSHALL GOLDSMITH, Top 50 Thinker and bestselling author of Triggers, MOJO, and What Got You Here Wont Get You There"If you have the courage and conviction to be a great leader youve found the perfect book" VERNE HARNISH, bestselling author of Scaling Up:How a Few Companies Make Itand Why the Rest Dont (Rockefeller Habits 2.0)"Whether youre an entrepreneur who wants to grow your company, a manager trying to up your game, or someone aspiring to be in a leadership role, this book belongs on your desk." KEVIN KRUSE, bestselling author of Employee Engagement 2.0"youll have unexpected fun and get to the bottom of some of the most important issues for true excellence in anything you do." TOM MORRIS, Author of such books as If Aristotle Ran General Motors, Superheroes and Philosophy, and The Oasis Within"This compelling story helps the reader think differently about ones self and others. In the process, Kahn achieves what every great author dreams of, namely, writing a book that drives personal and professional change." ORRIN WOODWARD, Guinness World Record Holder, Inc Magazine Top 20 Leader and NY Times Bestselling Author

The magnificent, unrivaled history of codes and ciphers -- how theyre made, how theyre broken, and the many and fascinating roles theyve played since the dawn of civilization in war, business, diplomacy, and espionage -- updated with a new chapter on computer cryptography and the Ultra secret.Man has created codes to keep secrets and has broken codes to learn those secrets since the time of the Pharaohs. For 4,000 years, fierce battles have been waged between codemakers and codebreakers, and the story of these battles is civilizations secret history, the hidden account of how wars were won and lost, diplomatic intrigues foiled, business secrets stolen, governments ruined, computers hacked. From the XYZ Affair to the Dreyfus Affair, from the Gallic War to the Persian Gulf, from Druidic runes and the kaballah to outer space, from the Zimmermann telegram to Enigma to the Manhattan Project, codebreaking has shaped the course of human events to an extent beyond any easy reckoning. Once a government monopoly, cryptology today touches everybody. It secures the Internet, keeps e-mail private, maintains the integrity of cash machine transactions, and scrambles TV signals on unpaid-for channels. David Kahns The Codebreakers takes the measure of what codes and codebreaking have meant in human history in a single comprehensive account, astonishing in its scope and enthralling in its execution. Hailed upon first publication as a book likely to become the definitive work of its kind, The Codebreakers has more than lived up to that prediction: it remains unsurpassed. With a brilliant new chapter that makes use of previously classified documents to bring the book thoroughly up to date, and to explore the myriad ways computer codes and their hackers are changing all of our lives, The Codebreakers is the skeleton key to a thousand thrilling true stories of intrigue, mystery, and adventure. It is a masterpiece of the historians art.