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When:
July 27, 2012 – July 29, 2012 all-day
2012-07-27T00:00:00+02:00
2012-07-30T00:00:00+02:00
Where:
Las Vegas, NV
http://ddtek.biz/
http://defcon.org/html/defcon-20/dc-20-ctf.html