[1]https://en.wikipedia.org/wiki/Popek_and_Goldberg_virtualization_requ
   irements
   43 years ago, virtual machines were first envisioned.
   Now there are more malicious versions of the Morris worm.
   I'm not sure if this essay is still
   accurate: [2]http://theinvisiblethings.blogspot.com/2011/04/linux-secur
   ity-circus-on-gui-isolation.html
   but Micah Lee clearly doesn't understand it:

     If that attacker gets the ability to run programs of their choice on
     your computer, as they often aim to do, they have access to all of
     your files. They can start logging your keystrokes, taking
     screenshots, and even listening to your microphone and watching
     through your webcam.

   There appears to be a widespread failure in communicating current
   vulnerabilities as a result of current features, thus preventing people
   from making informed decisions on various topics.

References

   1. https://en.wikipedia.org/wiki/Popek_and_Goldberg_virtualization_requirements
   2. http://theinvisiblethings.blogspot.com/2011/04/linux-security-circus-on-gui-isolation.html