\cvsection{Presentation}
\begin{cventries}
  \cventry
    {Presenter for <DEFCON 20th : The way to go to Las Vegas>}
    {6th CodeEngn (Reverse Engineering Conference)}
    {Seoul, S.Korea}
    {Jul. 2012}
    {
      \begin{cvitems}
        \item {Introduced CTF(Capture the Flag) hacking competition and advanced techniques and strategy for CTF}
      \end{cvitems}
    }
\end{cventries}
