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COMPUTER ASSISTED
AUDIT TECHNIQUES
The force multiplier in the battle against risk
ISACA Evening Talk (20 August 2013, Tuesday) @ NLB
20 Aug 2013ISACA Evening Talk - CAATs
1
AGENDA
• Business case for CAATs and data analytics
• Using CAATs to size up business processes quickly
• Simple CAATs techniques that yield quick return on
investment
• Using CAATs for investigative work
• How CAATs was successfully integrated into a Pre-CAATs
audit team
20 Aug 2013ISACA Evening Talk - CAATs
2
BUSINESS CASE FOR CAATS &
DATA ANALYTICS
Informal Poll:
How many in the audience are using Computer
Assisted Audit Tools/Techniques (CAATS) or Data
Analytics regularly?
20 Aug 2013ISACA Evening Talk - CAATs
3
BUSINESS CASE FOR CAATS &
DATA ANALYTICS
• Informal peer group of Heads of IA within institutions
of a higher learning (IHL)s – unscientific straw poll:
• 2012: 11% (1 out of 9 IHLs using CAATs)
• 2013: 33% (3 out of 9 IHLs using CAATs)
20 Aug 2013ISACA Evening Talk - CAATs
4
BUSINESS CASE FOR CAATS &
DATA ANALYTICS
Source: PWC 2013 State of
the Internal Audit Profession
Study
20 Aug 2013ISACA Evening Talk - CAATs
5
20 Aug 2013ISACA Evening Talk - CAATs
6
BUSINESS CASE FOR CAATS &
DATA ANALYTICS
• Chief Audit Executives agree that CAATs is important
• Adoption rates vary
• Why are we not there yet in terms of CAATs use and
implementation?
20 Aug 2013ISACA Evening Talk - CAATs
7
CAATS CHALLENGES &
OPPORTUNITIES
Opportunities
Allows us to leverage on
available technology
(PCs, Excel, CAATs tools)
Enhances team
productivity
100% or more testing
(include prior years)
Strategic
• “We are looking at big picture,
trends then we drill down to
examine details.”
Challenges
Requires a fundamental
paradigm shift
Old habits die hard
Sampling mindset
Fear of the unknown
• “The data must be exact and
correct before I can trust it to
do testing!”
20 Aug 2013ISACA Evening Talk - CAATs
8
CAN’T SEE THE FOREST FOR THE TREES
Perspective, Perspective and Perspective
20 Aug 2013ISACA Evening Talk - CAATs 9
USING CAATS TO UNDERSTAND
BUSINESS PROCESSES
Audit Objectives
Scope & Coverage
Walkthrough
Understand business
process
Key controls
• Preventive
• Detective
• Corrective
Evaluation of Controls
Controls testing
Or substantive
procedures
20 Aug 2013ISACA Evening Talk - CAATs
10
USING CAATS TO UNDERSTAND
BUSINESS PROCESSES
• Enterprises function in a data rich environment
• Operational systems
• Enterprise Resource Planning
• Even stand-alone departmental applications also have own
databases
• And auditors have an eye for details which is useful for
testing but…
• Are we at risk of missing the forest for the trees?
20 Aug 2013ISACA Evening Talk - CAATs
11
USING CAATS TO UNDERSTAND
BUSINESS PROCESSES
Understand business
process
Random or
judgmental sampling
(“30!”)
Test for errors (Y/N?)
• Yes – extend sample
• No – yay!
Pre-
CAATs
100% of transactions
in system
Understand data
• E.g. Fieldstats
• E.g. Summarise
• E.g. Pivot
Note initial insights
Post-
CAATs
20 Aug 2013ISACA Evening Talk - CAATs
12
USING CAATS TO UNDERSTAND
BUSINESS PROCESSES
ISACA IT Audit and Assurance Guideline G3 Use of Computer
Assisted Audit Tools
1.4.3 CAATs can be used in performing various audit procedures
including:
• Tests of details of transactions and balances
• Analytical review procedures
• Compliance tests of Information Systems general controls
• Compliance tests of IS application controls
• Penetration testing
20 Aug 2013ISACA Evening Talk - CAATs
13
USING CAATS TO UNDERSTAND
BUSINESS PROCESSES
Types of
CAATs
(G3 Use
of CAATS)
Generalised
audit software
•E.g. Excel, ACL,
Caseware IDEA
Utility Software
Application
Software
Tracing and
Mapping
Customised
Queries and
Scripts
20 Aug 2013ISACA Evening Talk - CAATs
14
SIMPLE CAATS THAT YIELD A QUICK
RETURN ON INVESTMENT
CAATS require
investments in:
Tools
•Software licences
•Hardware
Techniques
•Plan audits with
CAATs in mind
•Re-engineer
audit procedures
to use data and
CAATs
Time
•Training of staff
•Change
management of
mindsets and
methods
20 Aug 2013ISACA Evening Talk - CAATs
15
USING CAATS TO UNDERSTAND
BUSINESS PROCESSES
• Contoso (fictitious company)
• Analysis of international electronic sales
• Size up data quickly
• How many records? => addresses completeness issue
• What are the fields? => suggests what can be tested
• Examples using IDEA and Excel
• Fieldstats
• Summarisation
• Excel Pivot
20 Aug 2013ISACA Evening Talk - CAATs
16
EXAMPLE
20 Aug 2013ISACA Evening Talk - CAATs
17
Disclaimer:
• Not an “expert” in Excel or IDEA
• There could be other better ways to do the analysis/tests
shown
• In fact, that is one of the challenges in CAATS – too
many ways to perform the same function/test!
• Paradox of choice – analysis paralysis
SIMPLE CAATS THAT YIELD A QUICK
RETURN ON INVESTMENT
Sorting / Filtering
•Top 10/20 high/low
•Filter or Criteria
transactions that go
against business rules/logic
•Common sense testing
Duplicates, Gaps Test
•Duplicates – testing data
accuracy and integrity,
especially payments of
claims, invoices and
receipts
•Gaps – missing sequences
as a test of completeness
20 Aug 2013ISACA Evening Talk - CAATs
18
EXAMPLE
20 Aug 2013ISACA Evening Talk - CAATs
19
SIMPLE CAATS THAT YIELD A QUICK
RETURN ON INVESTMENT
Aging (for date and time related data)
• Account balances
• Payables/creditors
• Receivables/debtors
• Inventory
• Fixed assets
• Time-sheets
20 Aug 2013ISACA Evening Talk - CAATs
20
EXAMPLE
20 Aug 2013ISACA Evening Talk - CAATs
21
SIMPLE CAATS THAT YIELD A QUICK
RETURN ON INVESTMENT
Ratios
•Big picture
•Pareto analysis (80-20)
•Relativity between
departments, business
units, business lines
Trends (across space and
time)
•Time
•stratification
•Place
•geographical
•department
•business units
20 Aug 2013ISACA Evening Talk - CAATs
22
EXAMPLE
20 Aug 2013ISACA Evening Talk - CAATs
23
USING CAATS FOR INVESTIGATIVE
WORK
Finding the proverbial
needle in the haystack
Not knowing what you
don’t know
Zooming in on very specific
type of transactions
•filtering / criteria
•key word detection
•joining data from separate databases
CAATs
20 Aug 2013ISACA Evening Talk - CAATs
24
USING CAATS FOR INVESTIGATIVE
WORK
20 Aug 2013ISACA Evening Talk - CAATs
25
Define the specific
transactions or info
needed
Obtain data required
--Typically requires
multiple sources e.g.
Finance, HR,
Operational Depts
Collate sufficient,
appropriate evidence
to substantiate wrong-
doing
USING CAATS FOR INVESTIGATIVE
WORK
Search
•Functions /
Formulas
•IDEA - @ISINI
•Excel – <Ctrl>+F
Join/Match
•Putting together
disparate but
related pieces
together
•IDEA – FIND,
JOIN, APPEND,
@MATCH
Patterns
•Summarisation
by
staff/dept/type
of transaction
•Stratification by
dates
•Ratios
20 Aug 2013ISACA Evening Talk - CAATs
26
IMPLEMENTING CAATS: SOME
THOUGHTS
Pre-CAATs:
education, sharing,
change
management
CAATs
implementation –
Audit of Claims
•Look for easy data-rich
business processes
CAATs training – in-
house sharing and
formal hands-on
courses
Audit Plan – consider
CAATs, data
available, useful
analysis for raising
observations
20 Aug 2013ISACA Evening Talk - CAATs
27
IMPLEMENTING CAATS: SOME
THOUGHTS
•It is okay to start small but one should start with what you already have or with a small
pilot
•Learning from doing (and making small mistakes) is part of the journey
Start Now
•It is about changing mindsets to be open to technology/new approaches that is key in
success
•Convincing people to adopt a data-driven vs. intuition approach is important
Mindset vs. Technology/Skills
•Helpful to walk the talk
Lead by Example
20 Aug 2013ISACA Evening Talk - CAATs
28
IMPLEMENTING CAATS: SOME
THOUGHTS
20 Aug 2013ISACA Evening Talk - CAATs
29
• Resources to get started – consider the following authors
• ISACA IT Auditing Standards, Guidelines
• David Coderre
• Mark Nigrini
YOONG EE CHUAN
Email: yekker@gmail.com
Mobile: 96882300 (Whatsapp/LINE)
20 Aug 2013ISACA Evening Talk - CAATs 30

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Computer Assisted Audit Tools and Techniques - the Force multiplier in the battle against risk

  • 1. COMPUTER ASSISTED AUDIT TECHNIQUES The force multiplier in the battle against risk ISACA Evening Talk (20 August 2013, Tuesday) @ NLB 20 Aug 2013ISACA Evening Talk - CAATs 1
  • 2. AGENDA • Business case for CAATs and data analytics • Using CAATs to size up business processes quickly • Simple CAATs techniques that yield quick return on investment • Using CAATs for investigative work • How CAATs was successfully integrated into a Pre-CAATs audit team 20 Aug 2013ISACA Evening Talk - CAATs 2
  • 3. BUSINESS CASE FOR CAATS & DATA ANALYTICS Informal Poll: How many in the audience are using Computer Assisted Audit Tools/Techniques (CAATS) or Data Analytics regularly? 20 Aug 2013ISACA Evening Talk - CAATs 3
  • 4. BUSINESS CASE FOR CAATS & DATA ANALYTICS • Informal peer group of Heads of IA within institutions of a higher learning (IHL)s – unscientific straw poll: • 2012: 11% (1 out of 9 IHLs using CAATs) • 2013: 33% (3 out of 9 IHLs using CAATs) 20 Aug 2013ISACA Evening Talk - CAATs 4
  • 5. BUSINESS CASE FOR CAATS & DATA ANALYTICS Source: PWC 2013 State of the Internal Audit Profession Study 20 Aug 2013ISACA Evening Talk - CAATs 5
  • 6. 20 Aug 2013ISACA Evening Talk - CAATs 6
  • 7. BUSINESS CASE FOR CAATS & DATA ANALYTICS • Chief Audit Executives agree that CAATs is important • Adoption rates vary • Why are we not there yet in terms of CAATs use and implementation? 20 Aug 2013ISACA Evening Talk - CAATs 7
  • 8. CAATS CHALLENGES & OPPORTUNITIES Opportunities Allows us to leverage on available technology (PCs, Excel, CAATs tools) Enhances team productivity 100% or more testing (include prior years) Strategic • “We are looking at big picture, trends then we drill down to examine details.” Challenges Requires a fundamental paradigm shift Old habits die hard Sampling mindset Fear of the unknown • “The data must be exact and correct before I can trust it to do testing!” 20 Aug 2013ISACA Evening Talk - CAATs 8
  • 9. CAN’T SEE THE FOREST FOR THE TREES Perspective, Perspective and Perspective 20 Aug 2013ISACA Evening Talk - CAATs 9
  • 10. USING CAATS TO UNDERSTAND BUSINESS PROCESSES Audit Objectives Scope & Coverage Walkthrough Understand business process Key controls • Preventive • Detective • Corrective Evaluation of Controls Controls testing Or substantive procedures 20 Aug 2013ISACA Evening Talk - CAATs 10
  • 11. USING CAATS TO UNDERSTAND BUSINESS PROCESSES • Enterprises function in a data rich environment • Operational systems • Enterprise Resource Planning • Even stand-alone departmental applications also have own databases • And auditors have an eye for details which is useful for testing but… • Are we at risk of missing the forest for the trees? 20 Aug 2013ISACA Evening Talk - CAATs 11
  • 12. USING CAATS TO UNDERSTAND BUSINESS PROCESSES Understand business process Random or judgmental sampling (“30!”) Test for errors (Y/N?) • Yes – extend sample • No – yay! Pre- CAATs 100% of transactions in system Understand data • E.g. Fieldstats • E.g. Summarise • E.g. Pivot Note initial insights Post- CAATs 20 Aug 2013ISACA Evening Talk - CAATs 12
  • 13. USING CAATS TO UNDERSTAND BUSINESS PROCESSES ISACA IT Audit and Assurance Guideline G3 Use of Computer Assisted Audit Tools 1.4.3 CAATs can be used in performing various audit procedures including: • Tests of details of transactions and balances • Analytical review procedures • Compliance tests of Information Systems general controls • Compliance tests of IS application controls • Penetration testing 20 Aug 2013ISACA Evening Talk - CAATs 13
  • 14. USING CAATS TO UNDERSTAND BUSINESS PROCESSES Types of CAATs (G3 Use of CAATS) Generalised audit software •E.g. Excel, ACL, Caseware IDEA Utility Software Application Software Tracing and Mapping Customised Queries and Scripts 20 Aug 2013ISACA Evening Talk - CAATs 14
  • 15. SIMPLE CAATS THAT YIELD A QUICK RETURN ON INVESTMENT CAATS require investments in: Tools •Software licences •Hardware Techniques •Plan audits with CAATs in mind •Re-engineer audit procedures to use data and CAATs Time •Training of staff •Change management of mindsets and methods 20 Aug 2013ISACA Evening Talk - CAATs 15
  • 16. USING CAATS TO UNDERSTAND BUSINESS PROCESSES • Contoso (fictitious company) • Analysis of international electronic sales • Size up data quickly • How many records? => addresses completeness issue • What are the fields? => suggests what can be tested • Examples using IDEA and Excel • Fieldstats • Summarisation • Excel Pivot 20 Aug 2013ISACA Evening Talk - CAATs 16
  • 17. EXAMPLE 20 Aug 2013ISACA Evening Talk - CAATs 17 Disclaimer: • Not an “expert” in Excel or IDEA • There could be other better ways to do the analysis/tests shown • In fact, that is one of the challenges in CAATS – too many ways to perform the same function/test! • Paradox of choice – analysis paralysis
  • 18. SIMPLE CAATS THAT YIELD A QUICK RETURN ON INVESTMENT Sorting / Filtering •Top 10/20 high/low •Filter or Criteria transactions that go against business rules/logic •Common sense testing Duplicates, Gaps Test •Duplicates – testing data accuracy and integrity, especially payments of claims, invoices and receipts •Gaps – missing sequences as a test of completeness 20 Aug 2013ISACA Evening Talk - CAATs 18
  • 19. EXAMPLE 20 Aug 2013ISACA Evening Talk - CAATs 19
  • 20. SIMPLE CAATS THAT YIELD A QUICK RETURN ON INVESTMENT Aging (for date and time related data) • Account balances • Payables/creditors • Receivables/debtors • Inventory • Fixed assets • Time-sheets 20 Aug 2013ISACA Evening Talk - CAATs 20
  • 21. EXAMPLE 20 Aug 2013ISACA Evening Talk - CAATs 21
  • 22. SIMPLE CAATS THAT YIELD A QUICK RETURN ON INVESTMENT Ratios •Big picture •Pareto analysis (80-20) •Relativity between departments, business units, business lines Trends (across space and time) •Time •stratification •Place •geographical •department •business units 20 Aug 2013ISACA Evening Talk - CAATs 22
  • 23. EXAMPLE 20 Aug 2013ISACA Evening Talk - CAATs 23
  • 24. USING CAATS FOR INVESTIGATIVE WORK Finding the proverbial needle in the haystack Not knowing what you don’t know Zooming in on very specific type of transactions •filtering / criteria •key word detection •joining data from separate databases CAATs 20 Aug 2013ISACA Evening Talk - CAATs 24
  • 25. USING CAATS FOR INVESTIGATIVE WORK 20 Aug 2013ISACA Evening Talk - CAATs 25 Define the specific transactions or info needed Obtain data required --Typically requires multiple sources e.g. Finance, HR, Operational Depts Collate sufficient, appropriate evidence to substantiate wrong- doing
  • 26. USING CAATS FOR INVESTIGATIVE WORK Search •Functions / Formulas •IDEA - @ISINI •Excel – <Ctrl>+F Join/Match •Putting together disparate but related pieces together •IDEA – FIND, JOIN, APPEND, @MATCH Patterns •Summarisation by staff/dept/type of transaction •Stratification by dates •Ratios 20 Aug 2013ISACA Evening Talk - CAATs 26
  • 27. IMPLEMENTING CAATS: SOME THOUGHTS Pre-CAATs: education, sharing, change management CAATs implementation – Audit of Claims •Look for easy data-rich business processes CAATs training – in- house sharing and formal hands-on courses Audit Plan – consider CAATs, data available, useful analysis for raising observations 20 Aug 2013ISACA Evening Talk - CAATs 27
  • 28. IMPLEMENTING CAATS: SOME THOUGHTS •It is okay to start small but one should start with what you already have or with a small pilot •Learning from doing (and making small mistakes) is part of the journey Start Now •It is about changing mindsets to be open to technology/new approaches that is key in success •Convincing people to adopt a data-driven vs. intuition approach is important Mindset vs. Technology/Skills •Helpful to walk the talk Lead by Example 20 Aug 2013ISACA Evening Talk - CAATs 28
  • 29. IMPLEMENTING CAATS: SOME THOUGHTS 20 Aug 2013ISACA Evening Talk - CAATs 29 • Resources to get started – consider the following authors • ISACA IT Auditing Standards, Guidelines • David Coderre • Mark Nigrini
  • 30. YOONG EE CHUAN Email: yekker@gmail.com Mobile: 96882300 (Whatsapp/LINE) 20 Aug 2013ISACA Evening Talk - CAATs 30