The SSID is displayed in a mobile device's list of Wi-Fi networks, and it will attempt to connect if it has previously established the connection. THIS DEFINITION IS FOR PERSONAL USE ONLY.

Always set a secure SSID and Wi-Fi password to prevent unwarranted ... especially if you use websites without HTTPS ...

The separation of traffic in a Wi-Fi network. Wireless isolation, also called "client isolation," "AP isolation" and "SSID isolation," prevents users on a Wi-Fi network from reaching other devices ...

Whatever the case, changing your Raspberry Pi's Wi-Fi network ... a new password or SSID for improved security. Or perhaps ...