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SIA-SESI-7

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   © 2008 Prentice Hall Business Publishing Accounting Information Systems, 11/e Romney/Steinbart 1 of 151 C Sesi 7 Auditing Computer-based Information Systems   © 2008 Prentice Hall Business Publishing Accounting Information Systems, 11/e Romney/Steinbart 2 of 151 INTRODUCTION ã This chapter is written primarily from the perspective of an internal auditor.  – They are directly responsible for helping management improve organizational efficiency and effectiveness.  – They assist in designing and implementing an AIS that contributes to the entity’s goals.   ã External auditors are primarily responsible to shareholders and investors.  – Only indirectly concerned with AIS effectiveness.  – But many internal audit concepts apply to external audits.   © 2008 Prentice Hall Business Publishing Accounting Information Systems, 11/e Romney/Steinbart 3 of 151 THE NATURE OF AUDITING ã The American Accounting Association (AAA) defines auditing as:  –  A systematic process of objectively obtaining and evaluating evidence.  – Regarding assertions about economic actions and events.  – To ascertain the degree of correspondence between those assertions and established criteria.  –  And communicating the results to interested users.   © 2008 Prentice Hall Business Publishing Accounting Information Systems, 11/e Romney/Steinbart 4 of 151 THE NATURE OF AUDITING ã  Auditors used to audit around the computer   and ignore the computer and programs.  –  Assumption: If output was correctly obtained from system input, then processing must be reliable. ã Current approach:  Audit through the computer.  – Uses the computer to check adequacy of system controls, data, and output.  – SAS-94 requires that external auditors evaluate how audit strategy is affected by an organization’s use of IT.   ã Current approach:  Audit with the computer  .  – Uses Generalized Audit Software (GAS) to simplify audit process  – Ideally, it is suited for examining large data files to identify records needing further audit scrutiny.

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Jul 23, 2017
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