The phrase "inurl:viewerframe?mode=motion" is a well-known "Google dork"—a specific search string used to find unsecured IP security cameras that are broadcasting live to the public internet [1, 2].
The "hot" tag sometimes added to these searches is often used by malicious actors or voyeurs looking for specific types of activity, highlighting the darker side of unsecured technology. The Legal and Ethical Grey Area inurl viewerframe mode motion hot