An Information Security Handbook

Aimed primarily at final year undergraduate courses and MSc courses on Information Systems, Management of Information Systems and Design of Information Systems, this textbook aims to provide answers to five questions;
What is security? What are the security problems particular to an IT system? What can be done to reduce the security risks associated with such a system? In a given situation, what are the appropriate security countermeasures? How should one set about procuring an information s...