A harried IT manager (or a general manager with a laptop) would install the cameras, set them to motion mode to save bandwidth, and never change the default settings. When Google’s bots crawled the web, they indexed these open viewerframe interfaces.
If you find a hotel camera exposed:
Many routers utilize UPnP to automatically forward ports to internal devices, accidentally exposing local camera feeds directly to the wide area network (WAN). inurl viewerframe mode motion hotel verified
This article explores the mechanics behind this specific Google dork, its implications for personal privacy (especially in hotels), and the protective measures needed to prevent such exposure. A harried IT manager (or a general manager