Any Documention Specifically for Linux

1. http://www.redhat.com/docs/manuals/enterprise/ < - RHEL Manuals
2. https://rhn.redhat.com/errata/rhel3es-errata-security.html < - RHEL ES (V.3) Security Advisories
3. http://www.redhat.com/docs/manuals/ < - Redhat Manuals
4. http://www.securityfocus.com < - Security Focus
5. http://staff.washington.edu/dittrich < - other things
6. http://taosecurity.blogspot.com < - security daily blog
7. http://guninski.com < - resource IIS
8. http://atomix.localroot.org < - whitehat
9. http://phrack.nl < - phrack blackhat
10. http://lcamtuf.coredump.cx < - personal hero
11. http://phiral.com < - phiral research
12. http://phiral.com/~matrix < - passwd probability
13. http://rosiello.org < - whitehat security
14. http://whiteh8.info < - all about burning whitehat
15. http://el8.ru < - elite ezine
16. http://mixter.void.ru < - mixter
17. http://void.at < - andy
18. http://digitalsec.net < - digital security
19. http://sec-labs.hack.pl < - hacking pollish
20. http://securityrisk.org < - forum
21. http://thc.org < - not to bad
22. http://x82.inetcop.org < - dong you
23. http://waraxe.us < - all about PHP cross scripting
24. http://yulian.firdaus.or.id/gnupg.php < - GNU private good privacy
25. http://isec.pl < - just try
26. http://www.anyside.com/exp/ < -- just for urself :P
27. http://digitalsec.net/docs/ < - u: dsr p: l0ck3d
28. http://hackphreak.org < - undernet