How much security for switching a light bulb - The SOA way

What visions of technologies such as the Internet of Things (IoT), Pervasive Computing (PC) or Ambient Intelligence (AI) have in common is that they employ a very high amount of critically resource-constrained devices. This of course raises a whole set of new security challenges. Instead of proposing another middleware for IoT, PC or AI, and presenting a security approach for it we focus on existing, widely-adopted security mechanisms and concepts and give a comprehensive overview. Furthermore, we examine the Web Service security suite as an example for a comprehensive security framework on application level. We use an intentionally kept simple scenario including light bulbs and switches to demonstrate necessary security mechanisms and properties and to judge applicability of the presented existing security techniques and frameworks. Keywords—Devices Profile for Web Services, DPWS, Internet of Things, Pervasive Computing, Security, SOA for devices