The ongoing evolution of cyber threats requires a fresh approach to network security. They appear from any direction and don't respect borders, penetrating deep into the heart of your organization. As a result, traditional perimeter defenses, such as firewalls, have been rendered insufficient. When you consider that an increasing number of attackers now emerge from within your own fortress, it becomes clear that what is needed is a strategy that invariably presumes breach and assures trustworthiness at every layer from user to device to system regardless of where in your network the entity exists. That strategy is called Zero Trust.