This badge, which is also known as the black badge, is reserved for people who are first to solve one of the official DEF CON challenges. It grants lifetime free admission and opens just about any ...
It’s the DEF CON 25 logo (note the 2 and 5 make up a ... Not to be outdone (by himself), [Blenster] was also sporting a DerbyCon 2016 Black badge which he designed and built himself.
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