Expanding from my comment, my view is that any question which is specifically about the security of IoT devices is a perfectly valid question here. For example, take this title of a question:
What are the best security practices to follow when building an IoT device?
As you can see, this question is mainly about IoT, not just security in general and the title doesn't give much scope for discussing other devices (which is good, in my opinion!).
On the other hand, questions which are about security but are tangentially related to IoT should be migrated or closed (depending on the quality of the question and how on-topic it would be at Security).
Also, I don't think security is right for travel-related questions, because that isn't really security - perhaps travel would be a better tag?