Sometimes, the best hiding place is right in plain sight. Find out about steganography, the practice of concealing messages right under others' noses. See how it links with cryptology, the science of secret communication, and how the two have been used in some of history's biggest moments. Learn about invisible inks, the Cardano Grille, the use of microdots in WWI, and the butterfly maps of Lord Baden-Powell. And follow steganography into modern...

Espionage is one of the biggest modern-day threats to our security, so what can we do to stop it? This intriguing book explains how cutting-edge science and technology is used to stalk and stop spies and fight ever-changing battles in the secretive world of spying. Full of real spy stories that shook the world, this high-interest read will keep readers gripped.

Imagine having a job that has been around for thousands of years. People called cryptologists have been making-and breaking-codes almost as long as humans have written things down. Read about the historical code makers and breakers who protected their countries by coding and decoding messages for their governments, and the modern cryptologists who keep emails, texts, and online purchases secure.

This title focuses on hobby heists and details the most daring ones through history, the crews that pulled them off, and the impact they had on the victims and world. This hi-lo title is complete with vibrant photographs, simple text, glossary, and an index. Aligned to Common Core Standards and correlated to state standards. Fly! is an imprint of Abdo Zoom, a division of ABDO. Glossary of key words Index

Dive into the secret history of . . . secrets! Cryptology is the art and science of secret communication, and its purpose is to protect precious information and keep people safe. Learn about its building blocks: ciphers, codes, and keys. People have wanted to hide messages and important information for millennia. Read how history's coolest codes and ciphers have progressed from belts and sticks to rotating disks and supercomputers. Use your cryptology...

Computers and the internet forever changed how we communicate messages and other information. They also created new challenges for how we keep that communication private. That is where digital cryptology, the study of secret digital communication, comes in. Learn how professional cryptologists work to outsmart hackers and cyberterrorists trying to access private information. Then try it yourself with a hands-on digital cryptology activity!

This title focuses on bank heists and details the most daring ones through history, the crews that pulled them off, and the impact they had on the victims and world. This hi-lo title is complete with vibrant photographs, simple text, glossary, and an index. Aligned to Common Core Standards and correlated to state standards. Fly! is an imprint of Abdo Zoom, a division of ABDO. Glossary of key words Index

This title focuses on train heists and details the most daring ones through history, the crews that pulled them off, and the impact they had on the victims and world. This hi-lo title is complete with vibrant photographs, simple text, glossary, and an index. Aligned to Common Core Standards and correlated to state standards. Fly! is an imprint of Abdo Zoom, a division of ABDO. Glossary of key words Index

Spies have lots of tools and tricks up their sleeves that help them perform their jobs. This book gives the inside scoop on all the fascinating tricks of the trade!

How do spies build trust and infiltrate enemy organizations? In this title, readers will learn how spies are recruited and trained, and how they build the skills needed to gain intelligence. Readers will learn about amazing spies from history who risked their lives to get information. Readers can also try special missions such as creating a legend and mastering their memory. Aligned to Common Core Standards and correlated to state standards. Abdo...