Our consultants have authored or contributed to these leading security books:

Hack Notes™ Network Security Portable Reference
Special Ops: Host and Network Security for Microsoft, UNIX, and Oracle
Hacking Exposed: Network Security Secrets & Solutions, Fourth Edition
Hacking Exposed: Windows Server 2003
Hacking Exposed: Windows 2000
Network Security: A Beginner's Guide, Second Edition
Windows® XP Professional Security
Incident Response: Computer Forensics