Peter Stephenson, PhD, is a cyber criminologist, digital investigator, and digital forensic scientist at Norwich University (Vermont). He is a writer, researcher, and lecturer on information assurance, digital investigation, and forensics on large-scale computer networks. He has lectured extensively on digital investigation and security, and has written, edited, or contributed to 16 books and several hundred articles in major national and international trade, technical, and scientific publications. Dr. Stephenson is a Fellow of the Institute for Communications, Arbitration, and Forensics in the United Kingdom, an associate member of the American Academy of Forensic Sciences, a member of the Vidocq Society, and on the board of Vermont InfraGard. He holds the CISSP (Certified Information Systems Security Professional), CISM (Certified Information Security Manager), and FICAF (Fellow of the Institute for Communications Arbitration and Forensics) designations, and his research is focused on cybercrime assessment and profiling compromised networks. Keith Gilbert is a senior information security specialist on the Verizon RISK Team. He obtained both his BS and MS in information assurance from Norwich University and is an experienced digital forensic analyst. Gilbert has worked in both the public and private sectors among organizations ranging from 50 to 200,000 employees. He holds the Global Information Assurance Certification (GIAC) Certified Forensic Analyst (GCFA) and GIAC Certified Incident Handler (GCIH) certifications and is an associate of the International Information Systems Security Certification Consortium ((ISC)2).