During WWII the Germans developed a system to encrypt their messages known as the Enigma code. Through the use of early computers the Allied forces were able to intercept and decipher the messages. Currently there is an open source project to decipher three previously uncracked ciphers. Similar to the S.E.T.I. project where you donate your computer’s processing power while it is idle, the M4 Project has already managed to crack one cipher. With two left, there’s plenty of time to get the program installed on your computer and figure out what those Germans were trying to say!

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