Dare to test out your puzzle solving skills? Here's your chance!

Dare to test out your puzzle solving skills? Here's your chance!

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You know it, you love it - - it's #F5CipherChallenge time! Download the card here and you can complete it digitally. The official contest for 2020 Black Hat is now closed. You can still try to solve the puzzle; but the prizes have all been awarded. Thanks for visiting!

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