David Pogue Ponders WiFi Parnoia

Here's an excerpt from a David Pogue article that puts wireless security in perspective:

Some articles imply that passing evildoers can peer into your
files, delete important folders and release viruses. For
example, according to an Extreme Tech article, leaving your
security password turned off "is an invitation for someone to
pay you a visit anytime."

But I don't get it. Even somebody physically connected to my
network doesn't have access to my files! How would they have
any more access if they were parked in a car outside with a
wireless laptop?

In the end, neither Brian, Mani, nor I have ever heard of a
hacker accessing the files on someone's computer wirelessly.
So the next time you read any of the wireless-security
articles, keep these points in mind. First, any evildoer has
to be within wireless range of your base station, usually
about 150 feet. Brian Jepson, who lives in semi-rural New
England, points out that "I'd notice someone parked in my
driveway... I'd probably go over and talk to them or
something. :)"