Jennifer calls Leo Laporte's Tech Guy radio show to complain her "linksys" has disappeared: She starts by explaining that her "linksys" has gone away, and she bought a USB wireless extender, but it still doesn't show up. Leo asks, wait, do you have a wireless router? No, she's been using this other network.
Leo explains to her that she's stealing, and exposes herself to tremendous risk by being on an open network. "When you see an access point named linksys, it's usually because the person who set it up is kind of clueless," he notes.
I like Leo not compromising on the ethics, while offering security advice, and suggesting she get her own connection.