This specific string is frequently associated with research or ethical hacking. It is used to identify devices that have been left accessible on the public internet without proper password protection.
The "Viewerframe" Vulnerability: Unmasking the Security Risks of Unsecured IoT Cameras
: This is an advanced search operator used in Google searches. It allows users to search for a specific string within a URL. When someone uses "inurl:viewerframe," for example, they're looking for URLs that contain the word "viewerframe."
The query could be used by security researchers looking to identify vulnerabilities in CCTV systems used in hotels, especially those related to motion detection and video quality.
The fix required a full firmware update, disabling UPnP on the hotel’s router, and reconfiguring all cameras to require digest authentication.