I observed the usage of "Hotspot Shield" on some PCs on the network.
When checking the connection events, such traffic appears as "Hotspot Shield"in the "Web Application". Installation of the application/browser extension on that client PCs has been confirmed.
However, a traffic of "Hotspot Shield" in the "Application Protocol" and "Hotspot Shield client" in the "Client"with a blank record in the "Web Application" appears frequently on many PCs. When checking some of that PCs for application/browser extension, we found they are clean!
Cisco ASA5525-X Threat Defense High Availability
Cisco Firepower Management Center for VMWare 126.96.36.199 (build 73)