Web Directory by Internet-Web-Directory.com

Security advice and exploits.

A collection of current hacker news articles.

Security research site with quality papers and exploits

Hacking related group.

SoCal's hacking group. Canadian free since 1999.

TwistedinterneT ServiceS International Inc. - Serving the Underground since 1994. Underground Hacker site with an extensive archive and library.

Organization dedicated to the research and demonstration of vulnerabilities in network services and communication security. Offers papers, security tools, exploit code, advisories and a discussion forum.