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I can highly recommend grc.com as a good information source, and their 'shields up' application as a good tester for your ports. Not the best web design, but great tools.
For news in the underground check hackwire, for exploits to see what is new out there check out packetstorm. and to follow up on security read bugtraq mailing list. for Macintosh read securemac and for mac hacking read freak's macintosh archives ;)
a well configured firewall and secure servers (if you need to run them) are all you need to counteract any hackers
Herenvardö
I searched google and yahoo but nothing that's worth something came up...
How to use Google to hack [johnny.ihackstuff.com]
See also The perils of Googling [theregister.co.uk]
Both are actually interesting reads if you are interested in security.