You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

We recently had a rainy weekend interrupt our original plans to go geocaching. Instead, I took inspiration from John Baichtel's recent posting - Codes For Kids - to introduce my kids to ciphers.

Fortnite is entering its hacker era with this week's cipher decryption quests: figuring out the right locations will lead you to a bunch of goodies including the Keep the Peace Syndicate Idol spray, ...

In Part I, you broke a simple cipher. Now try creating a more complex cipher. Cut out the NOVA Decoder Ring and NOVA Cipher Code Ring and the window marked INDEX. You are now going to put this simple ...