--- a/slides/slides01.tex	Sat Sep 23 20:03:19 2017 +0100
+++ b/slides/slides01.tex	Sun Sep 24 16:48:52 2017 +0100
@@ -530,6 +530,8 @@
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
 \frametitle{Web Applications}
@@ -733,7 +735,8 @@
 \item SHA-1 is a cryptographic hash function\\
 (MD5, SHA-256, SHA-512, \ldots) 
 \item message $\rightarrow$ digest
-\item attacks exist: $2^{80} \rightarrow 2^{61}$ \bigskip\pause
+\item attacks exist: $2^{80} \rightarrow 2^{61}$ (should not be used
+  anymore and browsers stopped accepting SHA-1 certificates)\bigskip\pause
 \item but dictionary attacks are much more effective for extracting passwords (later)
 \end{itemize}  
   
@@ -866,7 +869,7 @@
 \end{itemize}\medskip
 
 \small
-(web user maintains 25 separate accounts but uses just 6.5 passwords.)
+(users typically maintain 25 separate accounts but use just 6.5 passwords.)
 
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
@@ -937,23 +940,22 @@
 
 \begin{itemize}
 \item electronic voting
-\item break-ins (buffer overflows)
+\item buffer overflows
 \item access control\\ (role based, data security / data integrity)
 \item protocols
-\item zero-knowledge proofs
 \item privacy
 \begin{quote}
 Scott McNealy: \\``You have zero privacy anyway. Get over it.''
 \end{quote}
 \item trust, bitcoins
-\item static analysis
 \end{itemize}
 
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
-\frametitle{Books + Homework}
+\frametitle{Books + Homework + Exam}
 
 \begin{itemize}
 \item There is no single book I am following, but
@@ -976,6 +978,41 @@
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
+\frametitle{There will be 1 Coursework}
+
+\begin{itemize}
+\item worth 10\%  
+\item released on 23 October
+\item due on 1 December  
+\end{itemize}
+
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[c]
+\frametitle{Lecture Capture}
+
+\begin{itemize}
+\item Hope it works\ldots\medskip\pause
+\item It is important to use lecture capture wisely:
+\begin{itemize}  
+\item Lecture recordings are a study and revision aid.
+\item Statistically, there is a clear and direct link between attendance and
+  attainment: Students who do not attend lectures, do less well in exams.
+\end{itemize}
+
+\item Attending a lecture is more than watching it online -- if you do not
+attend, you miss out!  
+  
+\end{itemize}
+
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[c]
 \frametitle{Further Information}
 
 For your personal interest: