Well that was interesting. I got a bit scared reading about this Shodan portal. I went off to find it, read the Ts & Cs, went about checking it out. As a search portal, it does not seem dangerous (meaning it doesn't look like a blackhat is on the other side, waiting to infect me with malware).
So I signed in, authenticated my account, and went about discovering how to use it. At first, I was a bit unprepared - I'm not used to searching for IoT stuff, I usually google normal stuff. I used the Explore button and got page upon page of TCP IP addresses. Clicked on one, got a login page. Didn't want to go there.
Then I got an idea : I would search my own IP address. If I discover a problem, all I have to do is shut down my router for a minute and I'll get a new IP, so not much risk there. I dared it, wondering if the security cameras installed by the firm I subscribed to would show up.
Relief, they do not. On top of that, when the result page displayed it showed a city location that has nothing to do with where I live, but is most likely the local ISP hub for my connection. So not only can no one find me like that, but it would appear that my ISP is on the ball concerning security, because there was nothing else on the page besides the TCP address and the city name.
I actually feel a bit safer now.