NTBugtraq - A mailing list for the discussion of security exploits and security bugs in Windows NT and its applications. Searchable archives, FAQs, patch download. By Russ Cooper.

Trusted Systems Services, Inc. - Provides Windows NT Security products and publications.

SystemTools.com, Inc. - Free and commercial administration, utility and security tools for Windows NT / 2000.

HSN Security Services - Source of B1-compliant NT System (the NTVault). Provides information security services including penetration testing, security policy development, and architectural planning.

ntsecurity.nu - Provides freeware security tools and information for Windows NT / Windows 2000.

SecureWave - A company that develops security software for Microsoft Windows network environments.

NTSecurity.com - One stop portal for NT security. One of the largest portals for NT security related information and products.

Building a Windows NT Bastion Host in Practice - A checklist for converting a default Windows NT installation to a bastion host: a host that must be secured because it is exposed to attack. By Stefan Norberg

tec-ref.com - White paper on steps for evaluating the security of a windows NT installation. Based on Appendix E in the Windows NT Security Handbook by Tom Sheldon published in 1996.

STAT: Security Test and Analysis Tool - Vulnerability assessment tool for Windows NT.

Rainbow Diamond Information Security - Software for NT intrusion detection, password policy enforcement, and automated password auditing.

Pedestal Software, LLC - Software for NT security, networking, and systems administration.

Microsoft Security - Microsoft's links to technical and how-to information about security for IT professionals, developers and those new to security.

Network Security Library - FAQs and articles about network security and insecurity for Windows.

Microsoft 128-bit PPTP upgrade hints - Provides information on making a PPTP VPN RAS connection more secure.

NT Security - Frequently Asked Questions - A FAQ maintained at the Swedish Royal Institute of Technology that discusses security related issues and problems with Windows NT.

NTadvice.com - A mailing list dedicated to the discussion of Windows NT Security Issues.

Ports Used by Trojans - A table showing examples of existing trojans and ports in current use.

Small Wonders Software - Develops products for managing and reporting NTFS permissions on Microsoft based servers.

About.com: Security Issues - A resource providing links to security issues pertaining to the Microsoft NT platform.

COAST Hotlist - A collection of links related to NT security.

Win2000mag.com Forums - A forum that allows users to discuss security issues relating to Microsoft NT.

Windows Risk-Based Security Configuration Document - A graded checklist that recommends security for a variety of NT installation and configuration tasks.

Shavlik Technologies - A company providing Microsoft based security solutions to fortune 500 and medium sized businesses.

Absolute Microsoft Security - Provides network security management products, including enterprise audit and scan software created for Microsoft Windows 2000, NT, and XP.

Windows NT Network Security - A Manager's Guide - A PDF document maintained at Lawrence Livermore National Laboratory.

Windows Security Guide - Technical information and resources to secure Windows systems and networks.

Microsoft Security Bulletin - A searchable bulletin providing NT security updates from Microsoft.