The fact that these feeds are indexed by Google is a massive privacy oversight by the device owner. Finding these feeds means:
Web crawlers (spiders) follow links and index content. If a user places their EvoCam server on a public network without a robots.txt file or authentication wall, the crawler indexes the webcam.html page. This turns a private surveillance feed into a public broadcast, searchable by anyone globally. Evocam Inurl Webcam.html