|HackerThreads. org - Security Forum|
Discussion forums with tutorials , hacking programs and miscellanious threads.
|HFX International Forum|
Discussion forum for topics surrounding the underground , technology and the like.
|Irvine Underground Forums|
Discussion forum for southern california security experts and hackers.
One of the worlds longest established hacking forums , offering resources covering everything from cracking to phreaking.
Discussion forum about the insecurity of humans known as social engineering.
Forum dedicated to bringing knowledge to people starting out in hacking.
|The Forbidden Web Archive|
Security and development forum with a security basics forum and vuln-dev.