4.2.9 Open system
A wireless network that does not use any authentication or encryption method is
referred to as an open system.
An open system can still have a minor level of security if the network's wireless
access point(s) does not broadcast the network's network name (SSID). A device
trying to join the network must then know the network name before connecting.
For more information about network names, see the
network name (SSID)
An open system is highly vulnerable to eavesdropping and intrusion.