Certain users might not want to restart the computer every time
they wish to use the Internet anonymously with Tails. For those,
a so called virtual machine can be used to run Tails inside the
"host" operating system installed on the computer (e.g.
Microsoft Windows, Mac OS X, etc.). Essentially these programs
emulate real computers that you can run "guest" operating
systems (in this case Tails) in so they appear in a window
within the host operating system. Using one of these
technologies allows for convenient access to Tails's features in
a protected environment while you at the same time have access
to your normal operation system.  Security issues  There are a
few security issues with this approach though.  When running
Tails inside a virtual machine, both the host operating system
and the virtualization software are able to monitor what you are
doing in Tails.  The main issue is if the host operating system
is compromised with a software keylogger or other malware, which
Tails does not provide any protec