As smart devices get connected and the Internet of Things (IoT) is becoming reality, we have to make sure that these networks are safe. The goal of the course Cyber Security in Internet of Things is to make you familiar with cyber security concerns IoT. IoT and so-called “smart devices” are growing in popularity. The Internet connection, which makes a smart device “smart & connected”, exposes this device to a wide range of attacks. Within this course, required precautions that should be taken in different cases, are presented a) for private users of IoT, as well as b) for users, who are installing IoT and other smart devices in a business setting.