Mary Worth
Michael Howard over at Microsoft, has a great post, on why security analogies are usually wrong, that has a beautiful analogy of his own that aptly makes his point.
Also, note that Ed Felten, is currently teaching a class, InfoTech & Public Policy [link to http://courseblog.cs.princeton.edu/spring06/wws528f/ no longer works], at Princeton. Students are required to post weekly, and non-students are encouraged to read and post comments.
Finally, short on cash? Phishing taking to long? Don’t feel like kidnapping and holding up a bank? Try explosives.