INF2004F Summary Notes.docx

Of concurrent techniques used to select transactions

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of concurrent techniques used to select transactions during normal processing for subsequent audit review 3. Snapshots and extended records are examples of concurrent techniques that trace, map, or document the state of the system during normal processing 4. Snapshots: Involves taking snapshots or pictures of transactions as it winds its way through an application system i.e. an automates version of a manual transaction walkthrough Snapshots are taken at material processing points in the application system- auditors must first identify these points and embed audit modules within the application
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At points, snapshots of transaction prior processing and one after processing as a basis for evaluating the authenticity, accuracy and completeness of the application processing carried out Other techniques: 8. Parallel simulation: Use live input data, rather than test data in a program which is written or controlled by the auditor and stimulates all or some of the operations Needs to understand the client system Should possess sufficient technical knowledge & should know how to predict results 9. Review of system software: Utility programs (e.g. search function) Operating system software (e.g. Windows) Program library software Access control software 10. Software tools to test program logic include: Automated flowcharting program- interprets source code and generates flowchart Automated decision table program- interprets source code and generates a decision table Scanning routines- searches program for specified items Mapping programs- identifies unexecuted code Program tracing- prints program steps with regular output to observe sequence of program execution events 11. Continuous approach: Achieved by embedding audit modules/audit hooks- application subroutines capture data for audit purposes Exception reporting- mechanisms reject certain transaction that fall outside Transaction tagging- tags with a special identifier for certain transactions Predefined specifications- prespecified criteria in a special log called SCARF Operational audits: Purpose is to evaluate effectiveness, efficiency and goal achievement. Although the basic audit steps are the same, the specific activities of evidence collection are focused toward operations such as: Review operating policies and documentation Confirm procedures with management and operating personnel Observe operating functions and activities Examine financial and operating plans and reports Test accuracy and operating information Test operational control
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Module 10: AIS Development strategies [chapter 21] Purchase, in-house development, outsourcing How to obtain an AIS Purchasing software In-house development Outsource to outside organisation Purchasing: Select a vendor Request for proposal that satisfies needs Evaluate proposals Final selection based on criteria Possible criteria: Cost Ease of use Integration with third-party apps
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