The Better Way of Applying Benford’s Law for Fraud Detection

Applying Benford’s Law on large collections of data is an effective way of detecting fraud. In this article, we?ll introduce you to Benford’s Law, talk about how auditors are employing it in fraud detection, and introduce you to a more effective way of integrating it into an IT solution.

Benford’s Law in a nutshell

Benford’s Law states that certain data sets – including certain accounting numbers – exhibit a non-uniform distribution of first digits. Simply put, if you gather all the first digits (e.g. 8 is the first digit of ?814 and 1 is the first digit of ?1768) of all the numbers that make up one of these data sets, the smallest digits will appear more frequently than the larger ones.

That is, according to Benford’s Law,

1 should comprise roughly 30.1% of all first digits;
2 should be 17.6%;
3 should be 12.5%;
4 should be 9.7%, and so on.

Notice that the 1s (ones) occur far more frequently than the rest. Those who are not familiar with Benford’s Law tend to assume that all digits should be distributed uniformly. So when fraudulent individuals tinker with accounting data, they may end up putting in more 9s or 8s than there actually should be.

Once an accounting data set is found to show a large deviation from this distribution, then auditors move in to make a closer inspection.

Benford’s Law spreadsheets and templates

Because Benford’s Law has been proven to be effective in discovering unnaturally-behaving data sets (such as those manipulated by fraudsters), many auditors have created simple software solutions that apply this law. Most of these solutions, owing to the fact that a large majority of accounting departments use spreadsheets, come in the form of spreadsheet templates.

You can easily find free downloadable spreadsheet templates that apply Benford’s Law as well as simple How-To articles that can help you to implement the law on your own existing spreadsheets. Just Google “Benford’s law template” or “Benford’s law spreadsheet”.

I suggest you try out some of them yourself to get a feel on how they work.

The problem with Benford’s Law when used on spreadsheets

There’s actually another reason why I wanted you to try those spreadsheet templates and How-To’s yourself. I wanted you to see how susceptible these solutions are to trivial errors. Whenever you work on these spreadsheet templates – or your own spreadsheets for that matter – when implementing Benford’s Law, you can commit mistakes when copy-pasting values, specifying ranges, entering formulas, and so on.

Furthermore, some of the data might be located in different spreadsheets, which can likewise by found in different departments and have to be emailed for consolidation. The departments who own this data will have to extract the needed data from their own spreadsheets, transfer them to another spreadsheet, and send them to the person in-charge of consolidation.

These activities can introduce errors as well. That’s why we think that, while Benford’s Law can be an effective tool for detecting fraud, spreadsheet-based working environments can taint the entire fraud detection process.

There?s actually a better IT solution where you can use Benford’s Law.

Why a server-based solution works better

In order to apply Benford’s Law more effectively, you need to use it in an environment that implements better controls than what spreadsheets can offer. What we propose is a server-based system.

In a server-based system, your data is placed in a secure database. People who want to input data or access existing data will have to go through access controls such as login procedures. These systems also have features that log access history so that you can trace who accessed which and when.

If Benford’s Law is integrated into such a system, there would be no need for any error-prone copy-pasting activities because all the data is stored in one place. Thus, fraud detection initiatives can be much faster and more reliable.

You can get more information on this site regarding the disadvantages of spreadsheets. We can also tell you more about the advantages of server application solutions.

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9 Cloud Security Questions you need to ask Service Providers

Companies in Ireland and the UK who are considering cloud adoption might already have a general idea of the security risks inherent in cloud computing. However, since different providers may not offer the same levels of risk mitigation, it is important to know which providers can give sufficient assurance on cloud security.

Here are 10 cloud security questions to ask service providers vying for your attention.

1. Where will my data be located?

There are a variety of reasons why you will want to ask this question. One big reason is that there are certain countries that don’t have strict legislation (or any legislation at all) pertaining to cloud computing. In that case, the provider won’t be as motivated to apply high levels of risk mitigation.

So if your data is hosted off shore, then you might want to reconsider or at least conduct a deeper study regarding the security conditions there.

2. Do you have provisions for regulatory compliance?

Certain standards and regulations (e.g. PCI DSS and possibly the EU Data Protection Directive) have specific guidelines pertaining to data stored in the cloud. If your organisation is covered by any of these legislation, then you need to know whether your provider can help you meet requirements for compliance.

3. Who will have access to my data?

In a cloud environment, where your data is going to be managed by people who aren’t under your direct supervision, you’ll have to worry as much about internal threats as you would with external threats.

Therefore, you need to know how many individuals will have access to your data. You also need to know relevant information such as how admins and technicians with data access rights are screened prior to getting hired. You also need to determine what access controls are being implemented.

4. How is data segregated?

Since there will be other clients, you will want to know how your data is going to be segregated from theirs. Is there any possibility of an accidental or intentional data breach due to poor data segregation? Find out if your data is going to be encrypted and how strong the encryption algorithm is.

5. How will you support investigative activities?

Sometimes, even if strong cloud security measures are in place, a data breach can still happen. If it does happen, the provider should have ways to track each user/administrator’s activity that can sufficiently support a detailed data forensics investigation.

Find out whether logs are being kept and how detailed they are.

6. Are we protected by a Disaster Recovery/Business Continuity plan? How?

Don’t be fooled by sales talk of 100% up-time. Even the most robust cloud infrastructures can suffer outages too. But the important thing is that, when they do fail, they should be able to get up and running in the soonest time possible.

Don’t just ask about their guaranteed RPOs and RTOs. Find out whether your data and applications will be replicated across multiple sites. Unless the provider says they will be, you need to find a provider with a better infrastructure.

7. Can I get copies of my VMs?

In a cloud infrastructure, your servers are actually in the form of files known as virtual machines (VMs). Because VMs are just files, they should be easily copied. There may be issues though, like the VMs might be stored in a not-so-popular proprietary format. Another possible issue is that the provider may simply not allow copying.

Having copies of your VMs can be useful should you later on decide to transfer to another provider or even duplicate your cloud infrastructure on your own.

8. What will happen to my data when I scale down?

One outstanding benefit of cloud computing is that when your business demands drop, you can easily scale down computing resources and reduce your cloud spending. ?But what will happen to your data when you decommission virtual servers? Will they be discarded?

You might want your data to be retained up to a certain period. On the other hand, you might also want them to be deleted immediately. Ask about the provider’s data deletion/data retention policies and see if they are in line with yours.

9. What will happen to my data if I decide to close my account?

There might come a time when you’ll want to terminate your contract with your cloud provider. Just like in issue #8, you’ll want to find out more about data deletion/data retention policies.

Although some providers can give you detailed answers, many of these answers can include a lot of technical jargon that can leave you totally confused. If you want someone you can trust to:

  • simplify those answers;
  • help you pick the right cloud service provider, and
  • even make sure cloud security is really upheld once your cloud engagement is ?under way

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How to carry out an Operational Review

A mobile workforce management software is key to managing an efficient field workforce.? Managing a staff of people can be tricky in any industry. Try keeping track of employees on shifting jobsites, many whom are paid hourly or temporary workers. The added pressure of ensuring the right workers get to the right sites at the right times, but they also need to track hours, parts used, vehicles and equipment assets.

In a previous post, we defined what is an operational review and why they play a key process in the continual evolution of successful businesses.?

Operational reviews allow the organization members to evaluate their performance, according to the procedures, resources properly, timescales and budgets.

Denizon – Operational Reviews Defined

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In this post, we’ll take a closer look at how to implement an operational review and the steps typically undertaken to help you and your organisation to implement an operational review.

What the steps in a Operational Review Process

There are typically six steps in an operational review that range from preparatory work conducting interviews and collecting documents to the presentation of the final written report.

An audit should be customized to meet a organisatons specific needs, so standard steps can and should only serve as a guideline.? Management and internal and external auditors should adjust the process to address the company’s particular goals and objectives.

Initial Management Meeting

Understanding the problem is the first crucial step of an operational review. This is one of major areas of discussions when the audit team meets with the management, and department heads will be asked to identify any specific areas of concern. Once the problem is identified, it would be easier to come up with workable solutions.

Conduct Interviews

The next step in the evaluation is carried out with experienced teams doing interviews and keeping close observation. Each team essentially watches how employees carry out their responsibilities. This is considered a key part of the process.

When doing the interview, it is also vital that the observing team gains the employees? trust and confidence. Likewise, the staff must be assured that whatever transpires between the team and the employee will be kept confidential. Management must therefore guarantee anonymity to anyone who offers critical information, lest employees withhold vital information and render the data gathered inaccurate.

Systems Review

Employees and management practices will be reviewed by the assessing team according to the standard policies and guidelines of the company. The effectiveness of the controls in place as well as their appropriateness to the current operating conditions will also be evaluated.

Reporting

A documentation of the data gathered and the assessment of the evaluating team, will be submitted to the management after the review process. Flow charts and written narratives of departmental activities are usually part of this report. This is also where observations and recommendations of the team will be presented to the department heads concerned.

Review Results

While the operational review is being conducted, it is important to take into account the vital factors that affect the company: the people, processes, procedures, and strategies. These four factors can determine the company?s progress in the future.

Key Areas of focus in operation reviews

At a minimum an operational review should include the following key ares of assessment

Management Control

Responsibilities, authority, and the scope in which an employee has the freedom to act must be clearly defined and documented. A complete and specific job description for instance, would give the employee a clear perspective on how he acts and functions within the company.

Boundaries should be set not only to benefit the employer but more so the employee as well.

Moral and Ethical Guidelines

Moral and ethical guidelines are just as important to ensure for a smoother employer?employee relationship. Otherwise, personal issues such as work ethics, work attitude and personal values may post problems in the long run if such guidelines are not drawn properly before relationships are established.

Processes and procedures

Evaluating processes is only beneficial if the company itself updates its processes and procedural manuals regularly, or at least when needed. Such protocols may need revision and some steps may be obsolete already. Improving a company?s processes and procedures doesn’t always entail cost. In fact, improvised procedures may even be cost-effective and could make the processes more manageable.

Communication and reporting standards

Gaps in communication could result in serious lapses in internal controls, putting the company and/or its assets at risk. This is where the importance of timely and clear communication comes in. Likewise, reports must be useful, and the flow of information and how it is processed must keep pace with the company?s growth.

Information technology (IT) and security controls can also be included under the communication clause. Proper IT security policies must be in place, state-of-the-art protection techniques employed, and everything be documented, periodically updated, and continually monitored.

Strategic planning and tactics

No company can ever be complete without its strategies. It would unwise for any organization to proceed without first knowing where it stands and what direction it wants to take. Strategic planning draws such a map. It must be aligned to the mission and vision of the company, and should also coincide with the organizational goals set. Strategic planning deals with these three key questions:

  • What do we do now
  • Whom do we do it for?
  • How can we overcome competition

Without clear strategic direction, expectations would likely differ between ownership and management.

Contingency planning, testing and recovery

Contingency plans must be up-to-date, and are essential to the organization. If one course of action fails, the company should have plan B, C and so on. In addition, an organization should be prepared to respond to interference’s.

This includes establishing a formal process to review transactions processing during both disruption and recovery.

Presentation of Report

Based on your objectives and our findings, we will develop detailed recommendations to improve your company?s performance and productivity. Our written report will include a list of both short-term and long-term projected improvements and courses of action, to be mutually agreed upon by both parties.

To ensure the achievement of the improvements we outlined, our team will also assist in the implementation of these modifications.

The plan has three levels of recommendations: one for executives, another for management, and a third one for staff.

The executive summary concentrates on your company?s strengths, weaknesses, opportunities and threats to its entirety. It includes recommendations for any needed changes in policy or governance.

The management plan is based on employee feedback and includes areas of immediate improvement as well as identification of potential problem areas. Concerns from the bottom level management can now be forwarded to the top level management in formal writing. Better working relationships may evolve from this, thereby setting the work environment for a higher productivity ratio.

Lastly, the staff report deals with topics like charting the hierarchy of the organization, and discussing in detail specific control objectives that are critical to the company?s mission. Part of our goal is to encourage personnel to pay close attentions to such changes, if any, as these efforts are essential if they want to bring about both organizational and personal success.

If you would like to further discuss how our operational review services can benefit your company, please feel free to contact us at your convenience to schedule an initial consultation. We?ll be more than happy to assist you.

More Operational Review Blogs


Carrying out an Operational Review


Operational Reviews


Operational Efficiency Initiatives


Operational Review Defined

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What Sub-Metering did for Nissan in Tennessee

When Nissan built its motor manufacturing plant in Smyrna 30 years ago, the 5.9 million square-foot factory employing over 8,000 people was state of art. After the 2005 hurricane season sky-rocketed energy prices, the energy team looked beyond efficient lighting at the more important aspect of utility usage in the plant itself. Let’s examine how they went about sub-metering and what it gained for them.

The Nissan energy team faced three challenges as they began their study. They had a rudimentary high-level data collection system (NEMAC) that was so primitive they had to transfer the data to spread-sheets to analyse it. To compound this, the engineering staff were focused on the priority of getting cars faster through the line. Finally, they faced the daunting task of making modifications to reticulation systems without affecting manufacturing throughput. But where to start?

The energy team chose the route of collaboration with assembly and maintenance people as they began the initial phase of tracking down existing meters and detecting gaps. They installed most additional equipment during normal service outages. Exceptions were treated as minor jobs to be done when convenient. Their next step was to connect the additional meters to their ageing NEMAC, and learn how to use it properly for the first time.

Although this was a cranky solution, it had the advantage of not calling for additional funding which would have caused delays. However operations personnel were concerned that energy-saving shutdowns between shifts and over weekends could cause false starts. ?We’ve already squeezed the lemon dry,? they seemed to say. ?What makes you think there?s more to come??

The energy team had a lucky break when they stumbled into an opportunity to prove their point early into implementation. They spotted a four-hourly power consumption spike they knew was worth examining. They traced this to an air dryer that was set to cyclical operation because it lacked a dew-point sensor. The company recovered the $1,500 this cost to fix, in an amazing 6 weeks.

Suitably encouraged and now supported by the operating and maintenance departments, the Smyrna energy team expanded their project to empower operating staff to adjust production schedules to optimise energy use, and maintenance staff to detect machines that were running without output value. The ongoing savings are significant and levels of shop floor staff motivation are higher.

Let’s leave the final word to the energy team facilitator who says, ?The only disadvantage of sub-metering is that now we can’t imagine doing without it.?

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  • (+44)(0)20-7193-9751 – UK

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