漏洞相关：
http://securitydot.net/
http://www.cisrt.org/blog
http://www.frsirt.com/english/
http://osvdb.org/
http://www.milw0rm.com/
http://secunia.com/advisories
http://www.derkeiler.com/Mailing-Lists/Full-Disclosure/
http://cve.mitre.org/
http://www.w00w00.org/
http://events.ccc.de/

破解相关：
http://www.woodmann.com/krobar/

一些公司：
http://www.mudynamics.com/
www.codenomicon.com/resources

其他：
governmentsecurity.org/forum
www.wilderssecurity.com
http://www.elitehackers.info/forums/

病毒:
http://www.f13-labs.net/
www.forcehacker.kit.net/

欢迎补充！