Security Concerns
Some hotspots authenticate users. This does not secure the data transmission or prevent packet sniffers from allowing people to see traffic on the network.
Some vendors provide a download option that deploys WPA support. This conflicts with enterprise configurations that have solutions specific to their internal WLAN.
In order to provide robust security to hotspot users, WiFi alliance is coming up with a new hotspot program which aims to encrypt hotspot traffic with the latest WPA2 security. The program is planned to launch in the first half of 2012.
Read more about this topic: Hotspot (Wi-Fi)
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