The Code Book: The Secrets Behind Codebreaking

This book is very inclusive for "young adults" who are really into coding. An excellent book for that age, but too advanced for the 10 yr. old I purchased it for - who is also into coding. Few graphics, much history. Looks interesting for those who want background and history. Just right for high schoolers.

My 12yr old son and I have been reading this book out loud before bedtime, and we are thoroughly enjoying it. Fun bits of history of interesting ways people have shared secret messages throughout the world. Definitely buy it!!

The content of the book is great, but the quality of the book (papers, covers) is worse than its previous, older, version.The content of the book is great. There are clear explanation and history of various techniques of codebreaking and the code itself, though I wish that they cover more on codebreaking with maths instead of just small explanation of the function that makes codebreaking useful. This is great book for those that wanted more historical side with very light maths, but those that wanted to explore more will find this book not enough.This book also does not cover well about modern cryptography, by just giving the basic look but there is not much about the math behind the cryptography, and very little is given about how to break modern cryptography, which should be there. This book also covers about quantum cryptography, and went great lengths to explain about it, which is a plus for this book.

I have long been fascinated with this subject and enjoyed this book. Most of it I understood. The mathematical parts were over my head but there was so much info I could understand that I didn’t mind the parts I couldn’t.

My 12 year old really enjoyed this book. He said it was really informative, but not boring, and that it even taught him how to break codes :). Good purchase - recommend it!

Should have read the description more thoroughly. Thought it would be more of how to create and break codes. Instead it was describing some codes that exhist and how they were used.

Looked the examples.

I purchased this book as a gift, but I started reading it to check it out, and before I knew, I had read the entire book! It is filled with fascinating anecdotes about the role of codes at so many critical junctures in history, and it will give your brain a workout! Highly recommend, for adults as well as inquisitive teens!

Good introduction in to the code evolution

It is a resume of the previous book

I liked the history and stories associated with cryptography in this book. It's a good read to find out about the processes of geniuses to secure a message. Completely out of box thinking by them I would say. Overall interesting book, nicely written.

I bought this for my grandson and he loves it. He loves maths and this book is a fun application of maths.

This is a great introduction to the history of cryptology for young people. It depicts many interesting stories, and explains how cryptology evolved for the last two thousand years. Although the book does cover some technical information, it is NOT a real technical book.