A hidden network is a wireless network that is configured not to broadcast its network name (SSID). This means that it is effectively hidden unless you know where to look, as it will not appear with other networks.
How to Connect to a Hidden Network in Windows 10
In the past, users often created hidden networks to add an extra layer of security, since no one could see they existed. In reality, it doesn’t add much protection and most users should have secure passwords instead.
However, a hidden network can still be used for a variety of purposes. These can be to keep a network list tidy, such as in a busy apartment building where you don’t want to advertise a network that you only use for a few of your own devices.
Similarly, in a work environment, it may be useful to make a guest network visible to visitors, while keeping a network used for employees hidden.