As the world moves towards embracing the internet of things for industrial assets, the importance of considering security cannot be understated. Industrial IoT poses unique challenges to security in combining Information Technology security with Operational Technology security. Many of these assets were designed to serve critical functions and their reliability is paramount. All of the systems that power our modern lives are undergoing a revolution where they will be controlled or interact with software. Assets will be connected to the internet for updates, pushing data, or even remote control. How can we make these industrial IoT systems secure by design?