Threat modeling is an invaluable part of the Security Development Lifecycle (SDL) process. It helps you understand and evaluate the possible security threats in your system, as well as determine the mitigations and risks of those threats. The Microsoft Threat Modeling Tool 2016 is a free tool to help you find security threats in the design phase of software projects. This latest release simplifies working with threats and provides a new editor for defining your own threats. In this session, you will be introduced to using the Threat Modeling Tool as well as ways to customize threat templates for your own projects.