This book constitutes the refereed proceedings of the First European Conference on Intelligence and Security Informatics, EuroISI 2008, held in Esbjerg, Denmark, in December 2008. The 23 revised full papers and 2 revised poster papers presented were carefully reviewed and selected from 48 submissions. The papers are organized in topical sections on criminal and social network analysis, intelligence analysis and knowledge discovery, Web-based intelligence monitoring and analysis, privacy protection, access control, and digital rights management, malware and intrusion detection, as well as surveillance and crisis management.

Abstracts of Plenary Talks.- Intelligent Social Network Modeling and Analysis for Security Informatics.- Nature Inspired Online Real Risk Assessment Models for Security Systems.- Homeland Security Data Mining Using Social Network Analysis.- Criminal and Social Network Analysis.- The Automatic Identification and Prioritisation of Criminal Networks from Police Crime Data.- An Information Theory Approach to Identify Sets of Key Players.- Locating Key Actors in Social Networks Using Bayes' Posterior Probability Framework.- Computational Modeling of Criminal Activity.- Intelligence Analysis and Knowledge Discovery.- SPYWatch, Overcoming Linguistic Barriers in Information Management.- Dissecting the Meaning of an Encrypted Message: An Approach to Discovering the Goals of an Adversary.- Buzz Monitoring in Word Space.- Web-Based Intelligence Monitoring and Analysis.- Nuclear Threat Detection Via the Nuclear Web and Dark Web: Framework and Preliminary Study.- Mapping Dark Web Geolocation.- Jihadi Video and Auto-radicalisation: Evidence from an Exploratory YouTube Study.- Privacy Protection, Access Control, and Digital Rights Management.- Access Control of Federated Information Systems.- Designing Information Systems Which Manage or Avoid Privacy Incidents.- Secure Computation for Privacy Preserving Biometric Data Retrieval and Authentication.- Digital Audio Watermarking for Copyright Protection Based on Multiwavelet Transform.- Problem Analyses and Recommendations in DRM Security Policies.- Malware and Intrusion Detection.- A Distributed Framework for the Detection of New Worm-Related Malware.- Optimization of NIDS Placement for Protection of Intercommunicating Critical Infrastructures.- Unknown Malcode Detection Using OPCODE Representation.- Surveillance and Crisis Management.- Mobile and Stationary Sensors for Local Surveillance: System Architecture and Applications.- Fuzzy Distributed Workflows for Crisis Management Decision Makers.- Reconfigurable Radio Systems for Public Safety Based on Low-Cost Platforms.- An Information Systems Design Theory for Supporting WMD Knowledge Reachback.- Rampart: A Service and Agent-Based Architecture for Anti-Terrorism Planning and Resource Allocation.- Posters.- Evaluative Word Locations in Semantic Networks from News Stories about Al Qaeda and Implications for Optimal Communication Messages in Anti-terrorism Campaigns.- Methodology for Experimental ICT Industrial and Critical Infrastructure Security Tests.