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this post was submitted on 05 Sep 2024
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Oh, c’mon. it is trivial to make an SSID “hidden” for any networking tech that you have administrative control over. That way, only those “in the know” will know the SSID name to type in, in order to access said wireless network. It would not be “discoverable” by standard wireless-connectivity gear such as the default wifi interface in mobile phones.
Hidden WiFi networks are not actually hidden in the literal sense. They still broadcast beacons that your wifi chip will see as basically “hidden network beacon lives here”. Your network connect interface just decides not to show you a list with a bunch of useless “(hidden)” entries you can’t do anything with.
Also, when a new client wants to connect to the hidden network, the first thing it does is broadcast an unencrypted message saying “HEY, I’M LOOKING FOR [hidden network name]” so it’s completely trivial to unveil the name of hidden networks given enough time.
Client devices can also do this all the time even when not in range, which basically broadcasts they're looking for that network everywhere they go. That's just asking for someone to setup a rogue access point.