In recent years, embedded devices are connected to networks and have a variety of interfaces. They have functions that are no different from those of personal computers of a decade ago. However, despite their advanced functionality, most of them do not take security into consideration in terms of cost and maintenance. In this session, we will show examples of actual IoT device diagnostics and countermeasures, as well as introduce our services that make it even easier. We will also introduce our service that makes it even easier.