Cracking Contests




Do you think you might want to try cracking passwords yourself?  Here are some cracking contests that you can attempt.








The Edgar Allan Poe Cryptographic Challenge

The Edgar Allan Poe Cryptographic Challenge - try your hand at this 150 year old cryptogram.




The Sidewinder Challenge Site - Hack this site and win $10,000.




The “Ace of Hackers” - Hack this server!




$1000 Passphrase Generation Contest




The Code Book

£10,000 Code Book Cipher Challenge - You can also join the Cipher Challenge discussion group here.  Simon Singh’s “The Code Book” can be purchased here.




The PGP Crakcing Contest - Just for fun!






The RSA Laboratories Secret-Key Challenge








If you think that daring a hacker is a fun thing to do (or if you want to get a whole bunch of people all working on cracking your passwod protected file or system) you may wish to sponsor your own cracking challenge or contest.  If so, we’d like to know about it so that we can add it to our site.  We’ll even host it for you here and make your file(s) available for download.  Please let us know about any other cracking contests by emailing us at




Bookmark this page and check back for new contests and challenges.




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