This whitepaper will discuss how the Windows 10 IoT product family – Windows 10 IoT Enterprise, Windows 10 IoT Mobile, and Windows 10 IoT Core – offers one platform designed for the security requirements of a range of device types. As the Internet of Things (IoT) continues to evolve, it becomes increasingly important to build devices on an IoT platform that correctly balances security needs, the user experience, and the resource constraints of diverse devices. Windows 10 IoT is that platform. Windows 10 IoT provides robust security capabilities to identities (both device identities and user identities), secure data, and secure connections. This paper will discuss key aspects of IoT security and how original equipment manufacturers (OEMs) can create secure devices that will delight customers.