Peter, This is a recent article in CONTROL Magazine June 2012 issue: ' http://www.controlglobal.com/articles/2012/cyber-attack-defense.html "Protocol Transformation Defense Against Cyber Attack" This Article Discusses how XMPP Can Offer Packet Inspection at an Endpoint Prior to Transformation to Another Protocol - 05/24/2012 WILLIAM J. MILLER, PRESIDENT, MaCT, (301) 500-9277 ISA100 CNMIG, Chairman IEEE P1451.1.4 Chairman ISO/IEC/IEEE 21451-1-4 Liaison ISO JTC1 WG7 INCITS SN1 US ANSI Representative