morse code - Morse code is a special alphabet that was used on a machine called a telegraph. This is how people communicated before we had phones., Pigpen - A Pigpen is a collection of funny looking grids with letters in a bunch of places., Security - We live in the information age, which means we use digital media every single day to send and receive messages., Vigenère - Up to this point, each of our secret codes weren’t actually very secret., Caesar - The first cipher we will look at is the Caesar Cipher., Cracking - to succeed in finding a solution to a problem: It's an unbelieveable opportunity.,

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