Guy is a senior security consultant with IPSS Inc. in Ottawa, Ontario. He works within IPSS Inc. security practice assisting clients with their security needs, implementation and engineering of intrusion detection/prevention systems (IDS/IPS) on large networks, integration of enterprise security management (ESM) solutions, network forensic analysis, network security auditing, and incident response and reporting. Guy has a BA (IT) from the University of Quebec and holds the prestigious GIAC Security Expert (GSE) certification as well as the GSEC, GCIA, GCIH, GCUX, and GCFA certifications. He is a SANS course author, SANS Certified Instructor, and an Internet Storm Center handler. He authored the OS hardened Snort with Sguil IDS platform and the DNS Sinkhole platform. Both ISOs are freely available at http://www.whitehats.ca.