PORTALS
http://jahtruth.net
JAH Truth, the key portal.


EXPLOIT ARCHIVES
http://www.securityfocus.com/vulnerabilities
The SecurityFocus Vulnerability Tracker.
SecurityFocus keeps track of the latest public exploits.
SecurityFocus covers vulnerabilities more thoroughly than PacketStorm.

http://www.packetstormsecurity.org/exploits100.html
Latest 100 explots on PacketStorm.
PacketStorm keeps track of the latest public exploits.

http://www.exploit-db.com/
The Exploit Database, operated by the BackTrack crew.
Exploit-DB is a replacement for the now defunt milw0rm.

http://inj3ct0r.com/
An exploit database to replace milw0rm.

http://www.securityfocus.com/archive/1
The famous BugTraq mailing list.
The BugTraq mailing list is used by researchers to post the latest public vulnerabilities.


NEWS
http://www.morningstarsecurity.com/news
MorningStar news is an InfoSec news aggregator service.

http://www.packetstormsecurity.org/
PacketStorm is a major infosec portal.
http://packetstorm.linuxsecurity.com/
http://packetstorm.setnine.com/
http://packetstorm.foofus.com/
http://packetstorm.austin2600.net/
http://packetstorm.orion-hosting.co.uk/
http://packetstormsecurity.nl/


FORUMS
http://opensc.ws
Malware forum, posts interesting malware samples.

http://hackhound.org/forum/index.php
American hacker forum.

http://damagelab.org
Russian hacker forum.

http://exploit.in
Russian hacker forum.

http://forum.antichat.ru
Russian hacker forum.

http://xakepy.ru
http://xakepy.cc
"Portal of Russian Hackers".

http://forum.darkst.com
A popular chinese hacking forum.

http://k0d.cc
Very obviously black hat russian forum.