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\begin{frame}
%
% To explain the paper's contribution we can simply break down the title:
% privacy-preserving and incrementally deployable support for Certificate
% Transparency in Tor.
%
% To make a long story short, Tor Browser does not support Certificate
% Transparency. The reason why you want to do that is because it makes it
% possible to detect if visited websites are being impersonated or not.
%
% For example, an attacker may want to impersonate a website to steal a
% user's credit card number. It is also helpful to de-anonymize a Tor user.
%
% So, our work focus on adding support for Certificate Transparency in Tor
% Browser. We do that while focusing on two key properties.
%
% The proposed solution should be _privacy-preserving_. We achieve this
% because of and how we use Tor.
%
% The proposed solution should also be incrementally-deployable, and in the
% end have a stronger threat model than current Certificate Transparency
% deployments in Chrome and Safari that trust so-called CT logs blindly.
%
% In more detail, our incrementally-deployable design goes from:
% pairs of CT logs that are trusted blindly, to
% at least one CT log is trusted blindly, to
% no CT log that is trusted blindly.
%
% It is fair to say that we have a strong threat model where the attacker
% even has a zero-day exploit against Tor Browser. In spite of this very
% strong threat model, the involved performance overhead is modest.
%
% For more detail, please refer to our paper and/or watch the presentation.
%
\mktitle{Breaking down the title}
\begin{columns}
\begin{column}{0.55\textwidth}
\begin{itemize}
\item Support Certificate Transparency in Tor
\item Privacy-Preserving
\item Incrementally-deployable
\end{itemize}
\end{column}
\begin{column}{0.45\textwidth}
\centering\includegraphics[width=.5\columnwidth]{img/tb}
\end{column}
\end{columns}
\footnotetext[1]{\tiny{Paper: \url{https://petsymposium.org/2021/files/papers/issue2/popets-2021-0024.pdf}}}
\footnotetext[2]{\tiny{Presentation: \url{https://www.youtube.com/watch?v=f7yDJOd6g3U}}}
\end{frame}
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