Disabling SSID broadcast is a form of security through obscurity: the access point stops advertising its network name in beacon frames, so casual users and basic scanning tools do not list the network. Anyone who already knows the SSID (or uses more advanced sniffing tools) can still discover and attempt to join the network, so the technique should be combined with strong encryption such as WPA2/WPA3. It does not significantly improve throughput, reduce interference, or satisfy regulatory requirements.
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