Hacking is the most important skill set of the 21st century! I don’t make that statement lightly. Events in recent years seem to reaffirm this statement with every morning’s headline. Nations are spying on each other to gain secrets, cyber criminals are stealing billions of dollars, digital worms demanding ransoms are being released, adversaries are influencing each other’s elections, and combatants are taking down each other’s utilities. These are all the work of hackers, and their influence over our increasingly digital world is just beginning to be felt.

I decided to write this book after working with tens of thousands of aspiring ...

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