May 26, 2013  12:12 PM

Cipher challenge: Can you decrypt this?

Posted by: Ken Harthun
Ciphers, Fun stuff, Security


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December 31, 2011  12:54 PM

What a Geek puzzle!

Posted by: Ken Harthun
Ciphers, Encryption, Hacking Skills Challenge

Can you solve this? The actual contest is over, but Sophos published a challenge recently that even stumped ME! Can you believe it? Anyway, here's a link to the original challenge: "The...

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October 31, 2011  7:37 PM

Happy Halloween!

Posted by: Ken Harthun
Ciphers, Edgar Allen Poe, Encryption, halloween

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August 31, 2011  1:41 AM

Humor: The Yorkie cipher

Posted by: Ken Harthun
cipher, Ciphers, Encryption, Security Humor

If you have been reading this blog for any length of time (and I hope you have!), you know that I'm a big fan of ciphers. In my next post, I'm going to talk about Steve Gibson's "Off the Grid" paper encryption system; that one is a stroke of genius. It's based upon Latin Squares with a twist. It...

June 11, 2011  2:34 AM

The American Cryptogram Association

Posted by: Ken Harthun
American Cryptogram Association, Ciphers, cryptogram, Cryptography

[caption id="attachment_1269" align="alignleft" width="263" caption="Naval Enigma Machine"]

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