QUESTION 1 (30 MARKS) Not everyone agrees on what constitutes computer fraud and some people may commit computer fraud unwittingly and not be aware of it. Many computer frauds go undetected. The belief that "it just can't happen to us." Most networks have a low level of security. Many Internet sites provide guidance on how to commit computer crimes. Law enforcement is unable to keep up with the number of computer frauds. Most frauds are not reported. The total dollar value of losses is difficult to calculate. Required: Explain the FOUR (4) cycles in system life cycle. ii. (8 marks) Identify and explain the THREE (3) types of layered approach to access control for active threat. (9 marks) iii. Differentiate between Phishing and Piggy Backing. (3 marks) iv. Briefly explain between active threat and passive threat. Give example. (4 marks) V. Explain the TWO (2) approaches to analyse the vulnerabilities and their limitation. (6 marks)