\documentclass{beamer}
\usetheme{metropolis}           % Use metropolis theme

\usepackage[utf8]{inputenc}
\usepackage{url}
\usepackage{graphicx}
\usepackage{caption}
% disable Fig. 1 label
\setbeamertemplate{caption}{\raggedright\insertcaption\par}
 
%Information to be included in the title page:
\title{Sample title}
\author{Anonymous}
\institute{ShareLaTeX}
\date{2014}
 
 
 
\begin{document}
 
%\frame{\titlepage}
 
\begin{frame}
\frametitle{Security as a process}

There is no such thing as perfect security.

Get over it.
\end{frame}

\begin{frame}
  \frametitle{What is security?}
  It's a feeling, but it's also a reality (or not).
  \begin{itemize}
    \item national
    \item personnal
    \item economic
    \item food security
  \end{itemize}
\end{frame}
\begin{frame}
  \frametitle{How to analyse a security solution}
  \begin{itemize}
    \item \emph{What needs to be protected?}
      % understand and describe what is at stake
    \item \emph{What are the risks?}
      % or "threat modeling": figure out which attacks are possible, who can perform them, how and why
    \item \emph{How well does the security measure solve the problem?}
      % problems are never completely solved, see how things will fail,
      % never underestimate the power of a baseball bat
    \item \emph{What other security problems does the measure cause?}
      % possible collateral damage (if you lose that key, you lose the data!
      % using crypto may be illegal)
    \item \emph{What are the costs of the security measure?}
      % training required, may be a barrier to entry
  \end{itemize}
\end{frame}
\begin{frame}
\begin{figure}[h]
    \includegraphics[width=0.8\textwidth]{security}
    \caption{https://xkcd.com/538/}
\end{figure}
\end{frame}
\end{document}
