This volume presents papers from a DIMACS workshop on network threats. The workshop brought together computer scientists (theorists and practitioners) working in this area to discuss topics such as network security, prevention and detection of security attacks, modeling threats, risk management, threats to individual privacy, and methods of security analysis. The book demonstrates the wide and diverse range of topics involved in electronic interactions and transactions-including the less desirable aspects: security breaches. The volume offers a timely assessment of avoiding or minimizing network threats. Presented here is an interdisciplinary, system-oriented approach that encompasses security requirements, specifications, protocols, and algorithms.The text includes implementation and development strategies using real-world applications that are reliable, fault-tolerant, and performance oriented. The book would be suitable for a graduate seminar on computer security. It features: discussion of Internet, Web and Java security; information on new attacks and weaknesses; and formal and informal analysis methods to identify, quantify, and combat security threats.