FBI Fun With Codes
FBI Fun With Codes
Written by Sue Gee   
Saturday, 04 May 2013

The FBI has set a new challenge for codebreakers. Amongst all the serious stuff on its site like lists of the most wanted fugitives you'll find a dot code puzzle  just waiting to be solved.

To interest the public in the work of its Cryptanalysis and Racketeering Records Unit (CRRU), the FBI has devised a dot code cryptanalysis puzzle. It looks a bit different to other coded messages, in fact you might just see it as and attractive arrangement of dots a a grid until you notice that they are grouped into sets of patterns - words.

The message can then be be cracked in the same way as other simple ciphers, by working out which repeating code corresponds to which letter of the alphabet using frequencies of letters and letter pairs.

One hint is to look for the one-character and two-character words and other helpful advice can be found in an article “Analysis of Criminal Codes and Ciphers” from the FBI's publication Forensic Science Communications.

 

fbidots

 

If you like this type of puzzle and have never considered www.fbi.gov as a likely source then there's a treat in store.  As well as this puzzle there are four previous ones. If you are stumped by the latest one try cracking the November 2007 code first - the web page it references no longer exists but what would you expect after more than 5 years.

The answer to the 2013 puzzle is given on the FBI site so we are not going to give it away here.

 

fbi

 

More Information

Can You Crack a Code

Related Articles

The Queen sets code-breaking challenge

 

To be informed about new articles on I Programmer, install the I Programmer Toolbar, subscribe to the RSS feed, follow us on, Twitter, Facebook, Google+ or Linkedin,  or sign up for our weekly newsletter.

 

 
 

 

blog comments powered by Disqus

 

Banner


Top 10 From Around the Web: More About JavaScript
07/11/2017

JavaScript is popular with both the writers and the readers of I Programmer. You'll find loads about JavaScript on this site, but  we regularly look at external blogs to bring you even more. [ ... ]



Facebook Open Sources RacerD For Android Race Detection
23/10/2017

It is a hardly discussed problem, but Android is a tough platform to use with concurrent programming. As a result most apps don't use it to its full potential. Facebook has now gifted you a tool that  [ ... ]


More News

Last Updated ( Saturday, 04 May 2013 )
 
 

   
Banner
Banner
RSS feed of news items only
I Programmer News
Copyright © 2017 i-programmer.info. All Rights Reserved.
Joomla! is Free Software released under the GNU/GPL License.