Some colleagues and I at APL were talking about the very old subject of the uselessness or dangers of a false sense of security. (See the sixth axiom at Security Axioms.) And today, Bruce Schneier's Crypto-Gram Newsletter showed up in my mailbox. One of the many great references caught my eye, so after you check out the newsletter, click on the link for A Pilot on Airline Security. An interesting read. Which reminds me of another interesting read, and still relevant. Marcus Ranum's The Myth of Homeland Security, which I reviewed here.