Spreadsheet Risk Management and Compliance
End User Computing Artifacts (EUCAs)
End user tools such as spreadsheets have empowered ordinary users to
simple applications without relying upon centralized information
departments. That in turn has freed resources in those
departments to support
large scale enterprise applications which require a
professional level of expertise.
However, these EUCAs are generally not developed with the same review
mechanisms used by IT professionals. There have been many studies
that spreadsheets and other EUCAs often contain serious errors.
EUCAs may be relatively simple, but that does not mean that
they are not important. Critical business decisions are often
based upon EUCAs, and millions of dollars have been lost due to
spreadsheet errors. It has been well said that if a transaction
involves thousands of dollars it is probably processed by a
managed database, but if it concerns millions of dollars then it is
probably analyzed by a spreadsheet.
Organizations should have a risk management strategy that minimizes the
risk of EUCAs while still enjoying the benefit of small scale ad hoc
development. Such a strategy should entail the following steps:-
- Identify the EUCAs, their location, who is using them, and for
- Determine the risk profile of each EUCA. This can be
- How critical the models are, and what the cost of a potential
error might be.
- How complex the models are, and how likely they are to contain
- Mitigate the risk with a focus on EUCAs that are both complex
and critical. This can involve peer reviews, independent
modeling, or possibly re-implementing the model using a different
An effective risk management strategy will minimize risk without
an unnecessary bureaucratic burden upon core business functions.
Compliance Detective provides tools that can be used to implement a
risk management strategy. Specifically it can
- Generate metadata that describes the potential risk that a
spreadsheet creates. This can be
- Automatically derived, such as calculating the number of
formulas within a model,
- Manual entered, such as recording the criticality of a model, or
- Calculated from other values, such as calculating the risk
based on complexity
- Collect the metadata so that it can be reviewed by risk
management experts. This can be performed by
- A high speed scanner that can find spreadsheets distributed
throughout an organization, or
- A cloud based solution in which metadata is uploaded to
- Analyze the metadata to identify areas of risk that need
attention, as well as to identify changing trends in risk profiles.
- Respond to risks by facilitating remedial strategies and alerting
key stakeholders of potential problems.
Perhaps the most important feature of the Compliance Detective is the
very powerful tools it provides to analyze individual spreadsheets and
highlight potential errors. Spreadsheet programs like Excel provide
good tools for building models, but very few tools for performing an
effective review. This is the core strength of the Spreadsheet
Detective upon which the Compliance Detective is based.
Another key factor is to recognize that many spreadsheets are based
upon a template that is copied and then modified. Those
modifications may only involve data, or they may involve the addition
or changing of formulas in the original template. The Spreadsheet
Detective can distinguish between formulas that were in the original
template and those that were added to the given instance of that
template. Once a template has been properly reviewed and
certified, it is important to only require a review of added or changed
formulas in the instances in order to ensure that the compliance
process does not place an unnecessary burden upon spreadsheet users.
The Compliance Detective integrates with existing records management
systems. Many organizations already have systems for storage and
control of sensitive documents, of which spreadsheets are only one
type. The Compliance Detective does not require that spreadsheets
be stored in some separate repository, which would then require
additional configuration and management.
The Compliance Detective also requires minimal support from an IT
department. The Spreadsheet Detective is an ordinary Excel add-in
which can be easily installed by end users. It does not require
administrator privileges to be installed. The scanner can also be
run on any machine that has access to the individual spreadsheets,
while the cloud based approach requires no IT support at all as
metadata (only) is uploaded directly by individual users.
The first stage is to create the metadata that will enable
spreadsheets to be managed effectively. Different organizations
require different metadata to be collected, so this is highly
Below is an example of a typical form that is expected to be filled out
by users for every spreadsheet that is created. It captures basic
information about the nature of the model, and most importantly how
critical its correctness is to the business.
If the cloud based approach is used then pressing the Upload Metadata
button will update the information that is stored in the cloud.
This button would not be present in a system that uses the scanning
Some information can also be captured automatically. The
following shows information about the complexity of a spreadsheet
model. Notice that it distinguishes between formulas in a master
template and formulas in an instance that is derived from that template.
By far the most important technique to minimizing spreadsheet risk is
to perform a systematic review of each critical model. This
should be performed by someone other than the person that created the
The Spreadsheet Detective has many powerful tools to assist with
review. In the image below, the blue shading shows how formulas
have been copied throughout a model, and highlights any
inconsistencies. The reviewer has then examined just the distinct
marked them as being correct using the green tick, with the exception
of the formula in cell
J20. These queried cells can then be collected together in a
report that can be presented to the original author.
The following dialog clarifies the meaning of the specific formula
in cell (J14). Note the green "AutoNames" which indicate which
otherwise cryptic A1 references refer to. The purple annotation
indicates potential errors or stylistic issues with the model.
Clicking on hyperlinks facilitates navigation, and dependents can also
be shown. There are videos that describe these and many
other features in detail.
When the review is complete the review(s) can update the metadata
appropriately. For some models it can be appropriate to also
provide a date at which another review should be performed. The
Spreadsheet Detective also provides advanced facilities for comparing
different versions of a model.
The scanning tool can scan many thousands of spreadsheets per hour
across an entire organization. It can also directly scan models
stored in secure document management systems without needing to
download them onto any file server. For larger organizations,
incremental scans can be performed that only scan models that have
changed since the previous scan. Fingerprinting is used to
determine whether formulas have changed rather than just data.
Spreadsheet dependencies can be tracked to ensure that upstream data
sources are also being used correctly. It can also identify
orphaned spreadsheets that continue to be used for some critical
business process but are no longer being maintained. Perhaps more
importantly, it can help identify applications that are too critical
and data centric to be be performed by a spreadsheet at all.
The output can be stored into a database, or can be simply loaded
directly into a spreadsheet for analysis.
The cloud based approach loads metadata into the Spreadsheet
Detective's secure servers. This approach requires no support
from a company's IT department. The metadata can also load data
into a private cloud if desired. Note that only the metadata is
uploaded, the actual spreadsheets never leave the corporate network.
The data can then be analyzed online, or more likely downloaded and
analyzed with more powerful offline tools.
Finally, the metadata can be analyzed to understand the risk profile
of an organization. This can be used to target compliance
initiatives to where they are most needed.
As an example of a typical analysis, we first examine the number of
models used in Production as opposed to being under Development or just
Archives of old models. We note the risk profile of those models,
and for what purpose they have been created.
In this scenario, Complex models that are Critical must be
reviewed. Those that are Simple and Critical, or Complex but just
Important should be reviewed but there is no insistence upon
that. Non-Critical models or Trivial ones never need a review.
This report shows that our compliance levels are poor. There are
almost 200 Complex, Critical models that have not been reviewed, and
even more for which a review is desirable but has not been performed.
Drilling down, we see that compliance actually improved during 2016 and
2018, with only 6 non-compliant models in Q4 2017. But there has
then been a serious regression in 2018.
Examining by usage, we see that Engineering has been the major source
of non-compliant models.
And filtering by Engineering shows that this problem has become much
worse in late 2018. Further, the total number of models has
increased, which suggest that Engineering has become very busy and may
not have time to perform required quality assurance. This
could lead to substantial costs if failures should result, so it would
appear that Engineering needs additional resources to implement proper
The Compliance Detective provides tools to gather metadata about
spreadsheet models both manually and automatically. This can then
be collected either by a scanner or a cloud based approach. The
results can be analyzed to develop quality management processes.
Perhaps more importantly, the associated Spreadsheet Detective provides
powerful tools to perform reviews of complex models, and thus minimize
the risk associated with end user computing.