Security Forums Dot Com 
Offers support forums on a selection of IT security topics including firewalls, encryption and malicious software. Based in UK.
http://www.security-forums.com/Wilders Security Forums
Security forums covering a wide array of topics including spyware, viruses and privacy software.
http://www.wilderssecurity.com/
Castle Cops
Discussion forums. Subforums include firewalls, homeland security and specific security vendor products. Also offer software reviews and downloads.
http://castlecops.com/
Tech Support Guy Security Forums
Since 1996, Tech Support Guy has been providing free technical support to computer users of all experience levels.
http://forums.techguy.org/54-security/
Gladiator Security Forum
A forum to discuss general security matters.
http://gladiator-antivirus.com/forum/
Security and Privacy Forums
Forums for discussing securing the home and SOHO users.
http://www.dslreports.com/forum/security,1
GFI Security and Messaging Software
GFI Security and Messaging Software Forum.
http://forums.gfi.com/
