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Implementing Controls and Why Implementations Fail

Control design · 1 min read

From design to operation

Plan, design and build, test, deploy and integrate, operate and hand over, monitor.

A control is implemented when it operates, has an owner and produces evidence, not when a tool is installed.

Why implementations fail

Failure causes: no clear owner, poor fit, scope gaps, under-resourced, no testing, change drift.

Checking it’s real

  • Is there a named operational owner?
  • Does it cover the full scope intended?
  • Has it been tested in production conditions?
  • Is evidence produced and retained?
  • Has residual risk been re-assessed?

Example. A DLP tool was bought and installed, and the data loss risk was marked “treated”. A year later, testing showed the tool was in monitor-only mode with no one reviewing alerts. The risk had never really been reduced.

How the exam asks about it

If the question asks…The answer is usually…
When is a control implementedWhen it operates, is owned and produces evidence
MOST common cause of control failureLack of ownership or poor fit with processes
After a new control goes liveTest it and re-assess residual risk
Changes to a controlThrough change management

In short

  • A control is implemented when it operates, has an owner and produces evidence, not when a tool is installed.
  • Implementation follows plan, build, test, deploy, hand over and monitor.
  • Common failure causes: no owner, poor fit, scope gaps, lack of resources, no testing and later changes.
  • Changes to controls go through change management.
  • After implementation, reassess residual risk based on the control as it actually works.

Exam traps

  • Marking a risk treated once the tool is purchased.
  • Skipping testing because the vendor says the product works.
  • No handover to an operational owner.
  • Assuming a control stays effective after system changes.

Slides

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CRISC · Domain 3 · Control design

Implementing Controls and Why Implementations Fail

How a control moves from design to business as usual, the common reasons implementations fail, and how the risk practitioner checks that a control is genuinely operating.

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