Design of privacy and security centric home automation system

Internet of Things (IoT) technology is one of the most popular research topics of recent years and is used in many fields such as health, transportation and education. One of these areas, home automation systems, has become more and more important in human life with the spread of IoT. Problems in security, privacy and interoperability arise because the devices used in IoT are diverse and incompatible with each other in terms of communication protocols and message contents, and hardware resources are often inadequate. In the presented thesis we propose solutions for, I) solving the communication problem between devices using different protocols, II) evaluating the message contents in terms of anomalies on the basis of senders, III) making them suitable for the recipient (anonymisation, enrichment and impoverishment), IV) preventing unauthorized communication of the devices with the world. V) preventing the local devices from attacking a device on the Internet or on the same network; and VI) eliminating vulnerabilities in device update operations. In this context, the platform we developed consists of a server, an Android application as a user interface and a gateway. In the gateway, broker, rule-based message processing, IP-based restriction and multiple SSID approaches are applied together. Thanks to the platform, devices from different manufacturers have been captured while working together or prevented from attacking other devices in the environment where a device does not work as expected, or a target on the Internet.