You might wonder why these cameras are still online. It usually comes down to "set it and forget it" syndrome. Many businesses install security hardware and never update it. As long as these legacy devices remain connected to the internet with default settings, search engines will continue to find and index them. To help you or research further , let me know: Are you trying to secure your own equipment ? Are you a student learning about Google Dorks ? Do you need a list of other common IoT vulnerabilities ?
I can provide to lock down your network or explain the mechanics of search engine indexing . inurl viewerframe mode motion
Manufacturers release patches to fix security holes that allow bypasses. You might wonder why these cameras are still online