Judy is an independent contractor with over 15 years of experience in intrusion detection and analysis of network traffic, with a passion for performing research on IDS evasions. She served as a principal research engineer on the Vulnerability Research Team for Sourcefire supporting Snort rules development, testing, research of IP and TCP reassembly, and performing competitive analysis.
Judy got her introduction into the world of cybersecurity and traffic analysis working on a DoD computer incident and response team. She is the author of SANS SEC503: Intrusion Detection In-Depth. She is the co-author, along with Stephen Northcutt, of Network Intrusion Detection - An Analysts Handbook (2nd/3rd Edition) and a SANS senior instructor. She is a 2010 recipient of a SANS Lifetime Achievement award.