Any 802.11 access point (AP) or Ad Hoc can advertise an interesting SSID to lure unsuspecting clients. For example, in major airports and conference centers, you're likely to find at Ad Hoc(s) advertising the "Free Public WiFi" SSID. Most are other clients that at some point in the past tried to connect to "Free Public WiFi" and are now returning that favor – usually without user awareness or malicious intent. Nonetheless, it is never safe to assume those Ad Hocs – or APs that advertise hotspot SSIDs – are legitimate or harmless. Always protect your traffic against man-in-the-middle attacks that can be performed by wireless imposters.
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