Critical infrastructure and industrial organizations continue the push to digitize operations and employ connected devices into the “Internet of Things” (IoT) at a time when advanced, persistent threats (APT) against these industries are rising at an unprecedented pace. While the convergence of digital assets with cloud computing can provide numerous benefits to efficiency, productivity, and reliability, every additional connected asset also represents a potential access point for bad actors. While data diodes have been used to secure IoT assets using industrial protocols, there remain the challenge of supporting data transfers between the devices and the cloud, using inherently two-way cloud-based protocols, such as MQTT.
