Packet Storm -- This is a good site to download applications to use in security testing. Should you ever need to diversify your security toolbox, this is the spot to visit.
Security Focus -- A place to get updated news regarding computer security. This specialized site is a good place to visit if you are looking for current trends in the global security problem.
Digg.com -- The security tab over at Digg gives viewers the opportunity to find out what other people in the internet community find to be important security issues. Since each article is rating with a +/- system, it is easy to get an idea of what people as a whole are thinking about various things. As well, you can read user comments to each article posted.