Various security links passed along by Dave. If you find these interesting, contact Dave and encourage him to write more. He is full of good security links and info, but he apparently needs a bit of encouragement...
Wireless Attacks and Penetration Testing: "There are several techniques to performing penetration testing on your wireless network, the objective of all of them being to improve the security and integrity of the network itself. What wireless lacks in the security of the physical layer and medium must be compensated for in protections on other layers of the stack."
MetaSploit: "The goal [of the MetaSploit project] is to provide useful information to people who perform penetration testing, IDS signature development, and exploit research. This site was created to fill the gaps in the information publicly available on various exploitation techniques and to create a useful resource for exploit developers."
Open Source Vulnerability Database: "OSVDB is an independent and open source database created by and for the community. Our goal is to provide accurate, detailed, current, and unbiased technical information." It even has an RSS feed. (Just in case it wasn't obvious, it's an open source database of vulnerabilities, not an open source database a la MySQL)