If you're looking for stronger proof of identity, you'll need to turn to secure wireless options. Wi-Fi Protected
Access (WPA) provides a network connection when a shared secret key is verified. In a WPA scenario, a successful access attempt at least indicates that you're connecting to a network that is set up by someone who knew the shared secret. Unfortunately, if you're dealing with public hotspots, such verification generally isn't an option. Therefore, you'll need to assume the network is hostile. To ensure that you're practicing safe wireless networking, you should resort to the security measures I mentioned above.
Dig deeper on Wireless LAN Design and Setup
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