Hacking Exposed VoIP: Voice over IP Security Secrets and Solutions by David Endler and Mark Collier

Hacking Exposed VoIP companion website by David Endler and Mark Collier ... latest blog entries Aug 16 2007 - Speaking at VoiceCon May 07 2007 - Speaking at Interop Mar 14 2007 - VOIPSA releases a list of security tools

hackingvoip.com