Binary file hws/hw07.pdf has changed

--- a/hws/hw07.tex	Wed May 20 01:24:37 2015 +0100
+++ b/hws/hw07.tex	Thu Jun 25 00:04:46 2015 +0100
@@ -9,6 +9,11 @@
 \item What are good uses of anonymity services like Tor?
 
 \item What is meant by the notion \emph{forward privacy}?
+
+\item Imagine you have an completely `innocent' email message, 
+  like birthday wishes to your grandmother? Why should you
+  still encrypt this message and your grandmother take the
+    effort to decrypt it? 
 \end{enumerate}
 \end{document}