ISO/IEC 27001:2022 Annex A · Control 5.7

Threat Intelligence: A Practical Implementation Guide

Turn external and internal threat information into prioritized decisions that reduce relevant risk.

Threat intelligence helps an organization understand actors, methods, vulnerabilities and events that may affect its assets and services.

Practical interpretation: Collecting feeds is not the goal. Useful intelligence is relevant, contextualized, timely and connected to risk treatment, vulnerability management and detection.

What should the control achieve?

Intelligence requirements reflect business risks.
Sources are credible and legally usable.
Information is analyzed for relevance and impact.
Actionable findings reach named owners and are tracked.

Step-by-step implementation

Define intelligence requirements

Ask which threats could materially affect critical services, technologies, geographies and suppliers.

Select sources

Combine vendor advisories, sector groups, government alerts, internal incidents and technical telemetry.

Collect and validate

Record source, confidence, timeliness and possible bias; corroborate important claims.

Analyze context

Relate information to assets, exposure, likelihood and business impact.

Disseminate and act

Create tickets, detection updates, risk decisions or executive briefings for the right audience.

Measure feedback

Review whether intelligence improved decisions and refine requirements.

What this could look like in practice

A healthcare software provider tracks exploitation of technologies used in its platform. An analyst matches alerts against the asset inventory, raises urgent tickets for exposed systems and updates monitoring rules for observed indicators.

Activity	Practical implementation	Evidence
Vulnerability alert	Match affected products to inventory and prioritize exposed assets.	Assessment and remediation ticket
Actor campaign	Brief leadership and tune detection for relevant techniques.	Threat brief and rule change
Internal incident	Extract lessons and indicators for future monitoring.	Incident review and indicator list

Implementation evidence

Intelligence requirements
Approved source register
Threat assessments
Asset correlation records
Intelligence reports
Remediation tickets
Detection updates
Feedback reviews

Useful metrics

Time to assess high-priority alerts
Percentage of relevant intelligence resulting in action
False-positive rate of distributed alerts
Actions completed within target

Common mistakes

Buying feeds without defined questions.
Treating unverified claims as facts.
Failing to connect intelligence to the asset inventory.
Sending identical reports to every audience.
Not tracking whether recommended actions close.

Questions an auditor may ask

What are your priority intelligence requirements?
How do you assess source confidence?
Show an action caused by recent intelligence.
How is intelligence linked to risks and assets?

Implementation test: Take one recent external alert and demonstrate why it mattered, who received it, what changed and how completion was verified.

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This independent educational guide paraphrases the practical intent of the control and does not replace the official ISO standards, professional advice or an organization-specific risk assessment. It is not affiliated with or endorsed by ISO.

ISO 27001 Annex A 5.7: Threat Intelligence – Practical Implementation Guide