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Introduction As businesses have come to depend very much on their information systems in the last half a century the importance of having those systems in a fit state to run has become paramount Not only is good reliable Electronic Data Processing vital but an increasingly important part of the equation involves the IT Security Function Without secure information systems a company is vulnerable to exploits from outside as well as within In recognition of this ways of measuring and monitoring the effectiveness of security controls and systems have been developed into internationally recognised standards providing a valuable tool for Auditing the IT Security Function Convincing management that the audit process is necessary to maintain good security is perhaps one of the main hurdles preventing good auditing practices to be adopted There are however convincing arguments to help persuade those in control of budgets that they need to take responsibility for adequate security The Role of IT Security The information age went international in the 1980s However the fact is that a series of corresponding security weaknesses also came For example electronic mails are widely applied in todays daily life and business while the virus of one computer connected to many others in a honeycomb arrangement may affect another as usually how great they are interconnected is unknownShain1996 Therefore information security is increasingly required to take on a considerably vital role in networks As Shain1996 points out security is a wide concept it is a separated subject with its own theories which focus on the process of attack and on preventing detecting and recovering from attacks Certainly these processes should be well organized in coping with the complex system issues A coherent approach should be taken which builds on established security standards procedures and documentation Actually the activities of the IT security function are varying in accordance with the criteria of size and sectorOsborne 1998 There are an amount of core activities including
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