A talk about a radio-based privacy device dubbed ProxyHam that promised to allow hackers to connect to Wi-Fi networks from as far as 2.5 miles away was abruptly pulled from the DEF CON schedule by its creator a few weeks ago. The new device is the creation of security researchers Robert Graham and David Maynor. It can proxy data over the 900 Mhz radio band from 20 miles away at up to 56kbps — the top speed of a dial-up modem from the late 1990s.”]