Designing and building the kind of mission-critical cyber protection systems needed in today’s vulnerable industrial environments are, in many ways, similar to the ways castles were designed and built in medieval times.
Barriers to entry were placed from the perimeter all the way into the core of the castle to stop invaders and give those inside the castle walls time to protect what needed to be protected. Moats, drawbridges, and iron gates all presented obstacles to anyone trying to breach the walls and entry points with malicious intent.
