\section{Updates and Security}

\begin{frame}
   {Updating and Patching the System}
   \begin{itemize}
      \item Security flaws are constantly found
      \item Most are very minor or have no known exploits
      \item A system which is not fully updated is vulnerable
      \item One of the most important jobs of the \textbf{Linux}
      distribution is to disseminate security fixes rapidly
      and carefully
      \item Examples of an update hurting a \textbf{Linux} system
      are very rare, especially as compared to other operating
      systems.
   \end{itemize}

\end{frame}

\cprotect\note{

   It is critical to pay attention to your \textbf{Linux}
   distributor's updates and upgrades and apply them as
   soon as possible.

   Most attacks exploit known security holes and are
   deployed in the time period between revelation of a
   problem and patches being applied.  \textbf{Zero Day}
   exploits are actually much rarer, where an attacker uses
   a security hole that either has not been discovered yet
   or for which a fix has not been released.

   System administrators are sometimes reluctant to apply
   such fixes immediately upon release, based on negative
   experiences with proprietary operating system vendors
   who can cause more problems with fixes than they solve.
   However, in \textbf{Linux} such security
   \textbf{regressions} are extremely rare, and the danger
   of delaying applying a security patch is probably never
   justifiable.

}



