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Designing and Selecting Controls

Control design · 1 min read

Select from the risk

Risk and objective, requirements, options, evaluate, select and design.

Principles of good design

Good control design: addresses the risk, right point in the process, automated, proportionate, owned and evidenced, hard to bypass.

Weighing the trade-offs

FactorQuestion
EffectivenessHow much does it reduce the risk?
CostWhat’s its total cost over its life?
FitDoes it work with our processes and systems?
UsabilityWill people use it, or work around it?
Side effectsDoes it create new risks or slow the business?

Example. To reduce payment fraud, a manual call-back check was cheap but slow and often skipped. An automated rule that held new-payee payments for independent approval cost more but ran every time, and was chosen.

How the exam asks about it

If the question asks…The answer is usually…
FIRST step in selecting a controlUnderstand the risk and the control objective
MOST effective control type, all else equalAutomated preventive
Control that people work aroundPoor fit; redesign it
When to define control evidenceAt design

In short

  • Start from the risk and the control objective, not from a product or catalogue.
  • Evaluate options for effectiveness, cost, fit with processes and architecture, usability and side effects.
  • Prefer automated, preventive controls where they fit, backed by detective controls.
  • Good design addresses the root cause, sits at the right point in the process and is hard to bypass.
  • Define the owner, evidence and metrics when the control is designed.

Exam traps

  • Selecting a control because a vendor recommends it.
  • Choosing the most technically advanced control regardless of fit.
  • Designing controls that privileged users can easily bypass.
  • Leaving ownership and evidence to be sorted out after go-live.

Slides

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CRISC · Domain 3 · Control design

Designing and Selecting Controls

How to choose and design controls from the risk rather than the catalogue, weighing effectiveness, cost, fit and side effects, and building in ownership and evidence from the start.

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