US Government Information Security:DOD, Navy, and other government bodies' information security documents.
Beginner's Guide To Lock Picking: A step by step guide to learning lock picking for common domestic locks.
Chris' DQC Archives: Various files on conspiracy theory.
DarkhanD Communications: The UK's leading technical support site.
Higher Learning: This page is meant for all the hackers who still believe in the old hacker code, and contains texts concerning the arts of hacking, phreaking and demo coding.
Internet information computers: Legal but underground information about windows OS and the internet
Sla_123: Download some research papers that are pretty good. You can add your research papers by sending them via email.
The Archives: Intended as a support site for hackers, this currently contains link lists for programs and text files.
UNIX / Net / Hack: Unix and internet lore, technical docs and programming tutorials.
Wietse's Tools and Papers: Various computer security related papers.