The string is a well-known Google Dork used to find publicly accessible live streams from networked IP cameras, specifically those manufactured by Axis Communications . What This String Does
Unsecured IoT devices are prime targets for malware like Mirai, which turns cameras into "zombies" for DDOS attacks. How to Secure Your Camera inurl viewerframe mode motion portable
In the early 2000s, IP cameras (Network Cameras) were designed with built-in web servers. You didn't need a DVR or a subscription service; you simply typed the camera's IP address into your browser, and a Java or ActiveX applet would load the video. "inurl:viewerframe
portable mode to test the feed on their phone and forget to disable it. A stranger can now watch their nursery.