Trying to secure the Internet of Things, or as Jerry Archer likes to call it, the MIST — massive integrated systems of smart transducers — can be like trying to lock fog in a box. The IoT is projected to generate more than $19 trillion in revenue by 2020, but to harness its potential, technology leaders must first figure out how to securely manage the multitude of identities. The complexity and scale of IoT requires organizations to redefine security boundaries. Archer outlines key considerations and strategies for protecting, storing and communicating data from a network of countless devices to secure the MIST.