Time to move beyond 'Medieval' cyber security approach, expert says

The nation's approach to cyber security has much in common with medieval defense tactics, and that needs to change, says a cyber security expert at Missouri University of Science and Technology.
"Most of our cyber defenses are modeled after medieval perimeter security -- a firewall is much like a castle moat -- and the idea of 'keeping the bad guys out'," says Dr. Bruce M. McMillin, professor of computer science and associate dean of the College of Engineering and Computing at Missouri S&T. "We live inside modern systems that are both physical and computational, and, in such a smart living environment, attacks can come from multiple different sources, some even inside what we consider protected."