VII
Contents
Ac k n o w l e d g me n t s xiii
In t r o d u c t I o n xv
Part 1 State of th eart
Ch a P t er 1 SeC urit y o f Co m Put er Net wo r kS 3
1.1 General Overview on Different Risks forand Means
of Computer Defense 3
1.2 Level of Security and Risks 3
1.2.1 Risks at the Physical Level 4
1.2.2 Risks at the Level of Access to Data and
eir Transmission across the Network 4
1.2.3 Risks at the Network Level 5
1.3 Means of Defense 5
1.3.1 Means of Defense at the Physical Level 6
1.3.2 Means of Defense at the Level of Data and
eir Transmission across the Network 8
1.3.3 Means of Defense at the Network Level 10
1.4 Conclusion 12
Ch a P t er 2 Bi o m e t ri C SySte m S 13
2.1 Introduction 13
2.2 General Definition of a Biometric System 14
2.3 ...