Computer Auditing Systems and Data-Oriented CAATs: An Overview, Exams of Advanced Education

An overview of computer auditing systems and data-oriented caats (computer assisted audit techniques). It explores different approaches to system-oriented caats, including test data, integrated test facilities (itf), parallel simulation, and embedded audit facilities. The document also discusses data-oriented caats, highlighting the advantages and disadvantages of generalized/customized audit software and systems utilities/report writers. It offers a comprehensive understanding of the various techniques used in computer auditing, providing valuable insights for students and professionals in the field.

Typology: Exams

2024/2025

Available from 11/15/2024

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CHAPTER 8 COMPUTER AUDITING SYSTEM
AND DATA ORIENTATED CAATS EXAM
SYSTEM ORIENTATED CAATs - --System Orientated CAATs concentrate on the
accounting system and related
control procedures and are used predominantly to perform tests of controls,
although some substantive
evidence may also be produced.
The use of systems orientated CAATs is regarded as "auditing through
the computer."
SYSTEM ORIENTATED CAATs
Different Approaches:
1) Test Data - --This type of CAAT requires the auditor to create a set of
transactions (let's assume
clockcards) to be keyed in and processed.
The transactions will include both correct data and
incorrect data;
i.e. a clockcard with an invalid employee number and another with 55 hours of
normal time, will be entered. What the auditor expects is that the invalid
employee number
will be identified by the computer and written to an error report, and that the
55 hours normal
time will be identified by the programmed input limit check and the error
highlighted
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CHAPTER 8 COMPUTER AUDITING SYSTEM

AND DATA ORIENTATED CAATS EXAM

SYSTEM ORIENTATED CAATs - --System Orientated CAATs concentrate on the accounting system and related control procedures and are used predominantly to perform tests of controls, although some substantive evidence may also be produced. The use of systems orientated CAATs is regarded as "auditing through the computer." SYSTEM ORIENTATED CAATs Different Approaches:

  1. Test Data - --This type of CAAT requires the auditor to create a set of transactions (let's assume clockcards) to be keyed in and processed. The transactions will include both correct data and incorrect data; i.e. a clockcard with an invalid employee number and another with 55 hours of normal time, will be entered. What the auditor expects is that the invalid employee number will be identified by the computer and written to an error report, and that the 55 hours normal time will be identified by the programmed input limit check and the error highlighted

immediately for correction. Obviously, if entry and processing goes ahead as normal, the controls are not working! SYSTEM ORIENTATED CAATs Different Approaches: 2)Integrated test facility (ITF) - --Is an extension of "test data". Artificial (dummy) unit has to be created in the client's system. Feed test transactions for processing with normal transactions Test transactions will be coded for excluding from client's accounting records. Auditor must have clear knowledge of all the controls. Auditor can visit the client on a number of occasions unlike "test Data" to perform tests. Major disadvantage is that the fictitious transactions can be mixed with clients data if not correctly coded. Client staff could manipulate ITF facility to commit fraud. SYSTEM ORIENTATED CAATs Different Approaches:

Special security features are included. Data Orientated CAATS: Different approaches: Systems utilities and report writers - --Systems utilities and report writers These are resident on the computers Used to manipulate/analyse data Auditor can design and extract various reports to perform substantive tests. Data Orientated CAATS: ADVANTAGES: - --Advantages: It is already loaded on client's hardware Relatively simple Perform many tests which GAS offers Cost is lower than using GAS Data Orientated CAATS: DISADVANTAGES: - --Disadvantages: Auditor must assess cost versus benefit Not well documented as GAS packages