Passwords: The Good, The Bad, and The Ugly

There are really only a couple of problems with passwords: Picking a good one, and then managing it. "Good" Passwords avoid being something that an intruder can guess or otherwise easily figure out.

What are Good/Bad Passwords?

* This excellent list of things to avoid comes from Matt Bishop's "Security Tools" tutorial from the USENIX '96 conference. Any reasonable search engine will turn up lots of hits for Matt's efforts and papers. Worth looking into.