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2006 – Biz Stone, Jack Dorsey, Noah Glass and Evan Williams launch this 140 character “What are you doing” social network. The group first started production in March of 2006, but it launched on the 15th. Currently, over 200 million users are on Twitter.

The Enigma machine was the first electronic cipher machines, producing encrypted messages. German engineer Arthur Scherbius created this device in 1928 to turn a message into a jumble of code. Therefore, if the message got in the wrong hands, it could not be read.Of course, though time, the encryption was broken by British intelligence. However, it proved that we could put a level of security to a simple text message. Something we continue to strive for even today.