Data center cybersecurity is often chaotic and complex. As a result, sadly, hackers often know the networks and systems they compromise better than their defenders. The Secret Service - and other expert physical security teams - approach security surprisingly differently, focusing on understanding and controlling their environment. In this session, Nathaniel Gleicher of Illumio reviews lessons cybersecurity can learn from physical security, and explains how to adapt these lessons to secure networks. This session explains why understanding and controlling your data center is essential, and why relying solely on high cyber walls is not enough.