'The MAC address is unchanged, tied to the device, so it can be used to identify and monitor Android devices even when using a random MAC address.Network name and / or BSSID can be used to locate users by searching on databases such as WiGLE or SkyHook.Other network information can also be used to find out, attack WiFi networks'.
This security vulnerability has been reported to Google since March this year, but has only been overcome by the tech giant on the latest Android version.So the only way to secure your device is to update it to Android Pie.However, this is not easy because most OEMs are still planning to update the OS, maybe a few months away.
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