Warren G. Kruse is a former police officer who is currently the Investigations Manager for Corporate Computer and Network Security at Lucent Technologies. He is on the International Executive Committee of the High Tech Crime Investigative Association, and co-chair of the National Cybercrime Training Partnership. Warren has assisted federal and local law enforcement in the investigation of numerous computer crimes and is in demand for his popular forensics class. Jay G. Heiser, CISSP, is an Information Security Officer at the headquarters of a major European financial institution. A Certified Information System Security Professional (CISSP), he is a seasoned expert with more than fifteen years of information security and incident response experience. Jay also writes a popular monthly column for Information Security magazine.