This subject begins with an overview of security attacks on system and network services, and a discussion of different existing security mechanism. The main focus is system, network and web security. You will learn (1) intrusion detection systems and firewalls that can be used to protect a computer system from security threats such as intruders, viruses and worms; and(2) the use of cryptographic algorithms and security protocols for providing network and internet security in terms of user authentication/ identification, IP security and Web security. You will also learn advanced information security through research papers and case studies.