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Collecting, Analysing and Reporting Metrics

Metrics · 1 min read

From data to decisions

Data alone isn’t a metric, and a metric alone isn’t a decision. The security manager runs a repeatable process that turns raw data from tools and processes into trustworthy information that people act on. Evaluating and reporting information security metrics to key stakeholders is a CISM task.

The metrics process

Define, collect, validate, analyse, report, act and refine.
  1. Define: formula, data source, owner, target, frequency.
  2. Collect: automatically from tools wherever possible.
  3. Validate: check accuracy and completeness.
  4. Analyse: trends, comparison with targets, causes, correlations.
  5. Report: the right level of detail for each audience.
  6. Act and refine: decisions and actions follow; retire metrics that no longer help.

Getting good data

  • Automate: pull from identity, vulnerability, endpoint, SIEM and ticketing tools.
  • Validate: check completeness. Are all assets included?
  • Independence: don’t rely only on teams grading themselves.
  • Consistency: the same definitions and scope every period, so trends are real.

Analysing and reporting

  • Show trends over time, not single snapshots.
  • Compare against targets and thresholds.
  • Explain causes, not just numbers.
  • Summarise for executives; give detail to teams.
  • Highlight the decisions or actions needed.

Example. Patch compliance shows 95% for months. Validation reveals the scanner only covers on-premises servers; cloud servers aren’t counted. True compliance is 78%. The CISO corrects the report, explains the change and adds cloud coverage. Credibility survives because the correction came from security, not from an auditor.

How the exam asks about it

If the question asks…The answer is usually…
Most reliable way to collect metricsAutomated collection from source systems
What to do before reporting metricsValidate their accuracy and completeness
Most useful presentationTrends against targets
A metric no longer drives decisionsRetire or replace it
Audience for detailed technical metricsOperational teams, not the board

In short

  • The metrics process: define, collect, validate, analyse, report, act and refine.
  • Automated collection from source systems is more reliable and cheaper than manual collection.
  • Validate data before reporting: inaccurate metrics destroy credibility and lead to bad decisions.
  • Trends over time say more than single values; compare against targets and thresholds.
  • Reports are tailored: summaries and business impact for executives, detail for operational teams.
  • Metrics are reviewed periodically; retire those that no longer drive decisions.

Exam traps

  • Self-reported data from the team being measured may be biased; verify independently.
  • A single data point says little; show trends.
  • Reporting too many metrics hides the important ones.
  • Metrics that nobody acts on are a waste of effort.

Slides

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CISM · Domain 3 · Metrics

Collecting, Analysing and Reporting Metrics

How the security manager turns raw data into reliable metrics, analyses trends, and reports them so stakeholders act on what they show.

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