\begin{frame}
  \frametitle{Take away}
  \begin{columns}
    \begin{column}{0.69\textwidth}
      \begin{itemize}
        \item Certificate issuance has undergone a paradigm shift
          \begin{itemize}
            \item Automated and free certificates: Let's Encrypt
            \item Transparency: CT, mandatory logging of certificates
          \end{itemize}
        \item CT does nothing for you without involvement
          \begin{itemize}
            \item Setup secure connections on your web services
            \item Monitor domain names for mis-issued certificates
          \end{itemize}
      \end{itemize}
    \end{column}
    \begin{column}{0.29\textwidth}
      \centering
      \includegraphics[width=0.75\textwidth]{img/take-away}
    \end{column}
  \end{columns}

\end{frame}