A security consultant and researcher for SI6 Networks. Specializes in the field of communications protocols security. Has worked on a number of projects for the National Infrastructure Security Coordination Centre (NISCC) and the Centre for the Protection of National Infrastructure (CPNI) in the field of communications protocols security. As part of his work for these organizations, he has written a series of documents with recommendations for network engineers and implementers of the TCP/IP protocol suite, and has performed the first thorough security assessment of the IPv6 protocol suite. Spoke at CanSecWest, Midnight Sun Vulnerability and Security Workshop/Retreat, FIRST Technical Colloquium, Kernel Conference Australia, DeepSec, Hack.lu, Hackito Ergo Sum, Hack In Paris, German IPv6 Congress, H2HC, Troopers.