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More about me, what I do and the services I offer:
http://www.clevcode.org/about/

My CV is available here:
http://www.clevcode.org/cv.pdf

My company:
ClevCode

Lately there has been a lot of attention about the Cicada 3301 puzzles, and my work on them, after this article:
The internet mystery that has the world baffled

For more information about Cicada 3301 and my solutions for the 2012 challenge, go to:
http://www.clevcode.org/cicada-3301/

If these kinds of puzzles and challenges interest you, you might also be interested in looking at the old GCHQ challenge:
GCHQ: solve the online code, become a real-life spy

My solutions for that challenge are available here:
http://www.clevcode.org/canyoucrackit-co-uk-gchq-challenge-solution/

Note that the GCHQ challenge is a bit more technical in nature than the Cicada 3301 puzzles, so it might not be for everyone. ;)

If you are even more hardcore, take a look at my writeups for pCTF 2011, won by me and my team mates in HackingForSoju:
http://www.clevcode.org/pctf/

If you appreciate my writeups, feel free to send me a donation. :)

/ Joel Eriksson <je at clevcode dot org>