Encryption has been around long before we needed to keep our intellectual property safe on computers. The Spartans used basic encryption technology as far back as 2,700 years ago, and the Germans are well known for the invention of the enigma machine, used for passing military information during the World Wars.

We will walk you through the most compelling encryption uses, especially the Ovaltine secret decoder ring, from the past, as well as teach you how to know if you are on a secure site while browsing the web.