Ido Dubrawsky is a network security architect with the Cisco Systems, Inc., SAFE Architecture Team. He is the primary author of the SAFE Layer 2 Application Note, the "SAFE SQL Slammer in Action" and "SAFE: IDS Deployment, Tuning, and Logging in Depth" whitepapers. Before his work in SAFE, Ido was a member of the Cisco Secure Consulting Service, providing network security assessment and consulting services to customers worldwide. Ido has contributed to numerous books and has written extensively on network security and system administration topics. He has been working as a system and network administrator for 10 years and has focused on network security for the past 5 years. He holds a bachelor of science degree and a master of science degree in aerospace engineering from the University of Texas at Austin. He currently resides in Silver Spring, Maryland, with his wife and children.Paul Grey, CCIE No. 10470, is a senior network architect for Boxing Orange Limited, a leading U.K. security specialist company, where he provides consultative, design, and implementation services using Cisco products. Paul also holds the CCNP, CCDP, and CCSP certifications and has more than 15 years of experience in the field of designing and implementing networking solutions. He primarily has focused on security solutions over the past 18 months and currently is pursuing his CCIE Security certification. Paul holds a bachelor of science degree in chemistry and physiology from the University of Sheffield.