Well, if you use an open wireless connection without any security, as is claimed in the article, then what do they expect?
My wireless system is supposed to be secure and I believe it is but, I could log on to six other open systems in my neighbourhood with no problem whatever. Fortunately, I know most of the people involved and I've told them I can do this. Their reaction? A shrug of the shoulders and an "It's OK, I trust you."