Some (web) security blogs/sites I like:
http://ha.ckers.org/ - in my opinion this is (by far) the best web security related blog. RSnake rocks! http://isc.sans.org/ - security news, latest stuff http://netsec.blogspot.com/ - latest links http://blog.washingtonpost.com/securityfix/ - very informative. Brian Krebs is a very good reporter. Sometimes, you can find here exclusive information. http://blogs.securiteam.com/ - funny http://www.darknet.org.uk/ - informative
Dont forget my fav:
http://security.microsoft.com/
-JP