Man in the Middle Attacks
How hackers can steal the messages you send over the internet, and how to tell if your communications are secure.
Secret Codes
Secret Code Workbooks
5 hands-on books & activities to hone your cipher skills.
Book Ciphers
Hide information in plain sight using a clever code and a good book.
Hieroglyphs and Reverse Engineering
How scientists finally cracked the code behind the mysterious language of Ancient Egypt.
Ciphers: the Enigma Code
Learn about the infamous Enigma machine and how its “unbreakable” code was finally defeated.
Navajo Code Talkers
Learn about the Native soldiers and the creative cypher code that helped win WWII.
Morse Code
In an era before telephones, a clever code was created to send messages by telegraph.
Rail Fence Cipher
A simple zigzag pattern can scramble your messages beyond recognition.
Pigpen Ciphers
Pigpen ciphers uses alien-like symbols to hide secret messages.