Chapter 1 An Introduction To Computer Security. TOPICS Introduction Threats to Computer Systems Threats, Vulnerabilities and Attacks Characteristics of Computer Intrusion Type of Threats Points of Security Vulnerabilities Methods of Defense Categories of Computer Attacks
A person - a system cracker or a spy,
A thing - a faulty equipment or
An event - a fire or a flood.
Physical: buildings and computer rooms are vulnerable.
Natural: computers are very vulnerable to natural disasters such as fire, flood etc.
Human: people who administer and user computer system represent greatest vulnerability of all.