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Legitimate Business Syndicate website
cLEMENCy is the LEgitbs Middle ENdian Computer architecture developed by Lightning for DEF CON CTF 2017
2016 DEF CON Qualifier Challenges
scraped and republished cyber grand challenge documentation
quals 2014 challenge
Source for many challenges from DEF CON 21 CTF Qualifier
Source for many challenges from DEF CON 21 CTF Finals