So, let's begin with one example (I call this one "Alice, at home."). Alice uses her laptop at the office with a wireless PCMCIA card. On an atypical weekend, she brings the laptop home and, just for the heck of it, searches from her living room to see if there are any access points nearby.

To her surprise, Alice finds an access point with the uncommon SSID "linksys." The access point is a strong signal (probably from a neighbor) and has no WEP. Just "for the heck of it," she clicks "connect," and finds herself automagically the proud owner of a DHCP-supplied IP address with the power to browse auction web sites in Cambodia. She writes about this in her weblog, which is picked up by the FBI, and John Ashcroft and company are musing what shall be done with Alice.