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Continuous Improvement of the Security Program

Communication and improvement · 2 min read

Never finished

Threats evolve, the business changes, controls degrade and people move on. A security program that stands still slowly falls behind. Continuous improvement builds learning into how the program runs, so it gets better with every cycle.

Plan-Do-Check-Act

Plan, do, check, act cycle.
StepIn the security program
PlanSet objectives and priorities; update the roadmap
DoImplement and operate controls
CheckMeasure with metrics, audits, tests, incidents and reviews
ActFix root causes; update policies, controls and plans

This is the same cycle that drives an ISO 27001 ISMS.

Where improvement comes from

  • Measurement: metrics and KRIs drifting from their targets.
  • Assurance: audits, assessments and penetration tests.
  • Incidents and near misses, including lessons from other organisations’ incidents.
  • Exceptions and feedback: many exceptions to one control show it doesn’t fit.
  • Change: new business strategy, regulation, technology or threats.
  • Benchmarks: maturity assessments and peer comparisons.

Every improvement action gets an owner and a date, and is tracked to completion. The same audit finding repeating year after year means the root cause was never fixed.

Management review

Like ISO 27001’s management review, senior management periodically steps back and asks whether the program is still suitable, adequate and effective:

  • held at planned intervals, at least yearly
  • reviews objectives, metrics, audit results, incidents, risks and changes
  • decides on improvements, resources and updated objectives

Example. At the annual management review, the leadership team notes three repeat audit findings on supplier access, rising phishing report rates and a planned acquisition. Decisions: fund an automated supplier-access tool, keep the awareness approach, and bring the acquired company into scope within 90 days.

How the exam asks about it

If the question asks…The answer is usually…
Model for continuous improvementPlan-Do-Check-Act
The same finding repeats every yearFix the root cause
Who decides whether the program is suitable and effective?Management, through management review
When to realign the programWhen strategy, appetite, regulation or technology change
A proactive source of improvementNear misses and other organisations’ incidents

In short

  • Continuous improvement follows Plan-Do-Check-Act: plan objectives, do the work, check results, act on what's learned.
  • Inputs include metrics, audits, assessments, tests, incidents, near misses, exceptions, stakeholder feedback and changes in threats and the business.
  • Management review, as in ISO 27001, periodically decides whether the program is still suitable, adequate and effective.
  • Fix root causes, not just symptoms, and track improvement actions to completion.
  • The program is re-aligned when the business strategy, risk appetite, regulation or technology changes.
  • Mature programs learn from near misses and other organisations' incidents, not only their own.

Exam traps

  • Improvement actions without owners and dates rarely happen.
  • Repeating the same audit finding year after year means the root cause wasn't fixed.
  • Waiting for an incident to drive improvement is reactive and costly.
  • A program aligned to last year's strategy can drift out of alignment without anyone noticing.

Slides

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CISM · Domain 3 · Communication and improvement

Continuous Improvement of the Security Program

How the security program keeps getting better: Plan-Do-Check-Act, the evidence that drives improvement, management review, and keeping the program aligned as the business and threats change.

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