I just ran across this nice two part series (easier part one, more advanced part two) discussing some ways to improve security in Tiger while waiting for Leopard to come along. The author, Sebastiaan de With, discusses some unfortunate choices made by Apple with regards to, among other things, firewall, networking, and Bluetooth settings, and offers suggestions for how to fix these and other potential problems. He also offers some good ideas for portable Mac users.
Now inevitably these sorts of considerations (much like security practices in air travel) involve weighing convenience against safety. I know a lot of my own practices (e.g. auto-login, running as administrator) are dangerous, but it's hard to break bad habits. What other security advice do you think is important?
graphic: Sebastiaan de With