Here are a whole bunch of cameras from around the world.
https://www.insecam.org
I've got almost the same exact system mentioned in the article, a LOREX, looks just like the picture. I'm not worried, all the cameras are external around my home, none showing contents inside. I do use the Internet to check on my home when away, via cellphone and iPad. If I were to spot anything suspicious I can call a neighbor to check on the house. And if compromised, I have a second camera system in place. On UPS battery power if the power is cut.
I would not click on that link, that site is scanning your router and connections and anyone else who clicks those kind of links. Just letting you know