Threat Intelligence
Definition
Threat intelligence is the systematic collection, analysis, and use of information about existing or emerging threats to help an organization prevent, detect, and respond to attacks. In an ISO/IEC 27001-aligned information security management system (ISMS), threat intelligence supports risk assessment and treatment by providing timely external context about threat actors, tactics, techniques, and procedures (TTPs), common attack paths, and relevant indicators of compromise (IOCs). It is commonly operationalized under Annex A controls such as A.5.7 (Threat intelligence) (aligned with ISO/IEC 27002:2022 control 5.7), where organizations define sources, validation methods, roles, and routines for turning raw threat data into actionable insights. Effective threat intelligence is tailored to decisions: strategic intelligence informs leadership and risk priorities; operational intelligence supports incident response planning and coordination; tactical intelligence guides detection engineering and threat hunting with IOCs and behavioral patterns. Intelligence should be evaluated for relevance, credibility, and timeliness, then integrated into security operations, vulnerability management, and third-party oversight. Similar practices are often referred to as cyber threat intelligence (CTI), external threat monitoring, intelligence-led security, or threat-informed defense in other security frameworks and programs.
Real-World Examples
Detection rules from IOCs
A startup security team (or managed SOC) ingests vetted IOCs and updates alerting rules to catch phishing and credential theft attempts.
Risk register updates
A growing company reviews quarterly strategic intelligence to adjust risk likelihood and prioritize mitigations for top threats.
Cloud exposure response
An enterprise cloud team uses exploit intelligence to fast-track patching and configuration fixes for exposed services.
Third-party monitoring
A regulated business tracks supplier breach reports and sector targeting to refine vendor review scope and safeguards.
Threat intelligence is analyzed information about threats that helps organizations make better security decisions, such as what to monitor, what to fix first, and how to respond. It turns raw signals (reports, telemetry, indicators, and observations) into guidance that is relevant, credible, and timely for your environment.
Threat data is unprocessed or lightly processed information, such as IP addresses, hashes, or headlines about an attack. Cyber threat intelligence (CTI) adds context and judgment—why it matters, who is targeting whom, how attacks work, what is likely in your environment, and what actions you should take.
Strategic intelligence supports executives and risk owners with trends and business impact. Operational intelligence supports incident response and planning with details about campaigns and actors. Tactical intelligence supports defenders with actionable detection and prevention details such as techniques, patterns, and validated IOCs.
IOCs are observable artifacts that may indicate malicious activity, such as suspicious domains, file hashes, IPs, or email subjects. They are used to enrich alerts, block known bad activity, and guide hunting, but they must be validated and time-bounded because attackers can change infrastructure quickly.
Feeds provide streams of threat-related items—often IOCs, reputation scores, and context—from external or internal sources. Effective use requires ingestion, normalization, deduplication, confidence scoring, and correlation with your logs and assets so only relevant, high-quality items drive controls like blocking and alerting.
A threat intelligence platform (TIP) centralizes collection and management of intelligence, helping teams aggregate sources, enrich and score indicators, track relationships (actors, campaigns, techniques), and distribute outputs to security tools and workflows. It is meant to improve signal quality, governance, and automation.
A feed is a source of threat items (often a stream of indicators and context). A TIP is a system that helps manage many sources, normalize and evaluate data quality, add enrichment, and operationalize intelligence by pushing curated outputs into detection, blocking, hunting, and response processes.
Start with clear intelligence requirements tied to decisions (risk, detection, response, vulnerabilities, third parties). Define sources and validation criteria, assign roles, and establish a lifecycle: collect, analyze, produce outputs, disseminate, and measure outcomes (reduced time to detect, fewer false positives, faster patching).
Common sources include internal telemetry (logs, incidents, endpoint/network signals), open sources (public reports and advisories), curated commercial sources, and trusted sharing communities. Programs typically combine multiple sources and apply governance to handle reliability, licensing, and sensitive information.
STIX is a structured format for representing threat intelligence (indicators, actors, campaigns, techniques), and TAXII is a transport mechanism for sharing that information between systems. Together they help automate consistent exchange so intelligence can be ingested and operationalized more reliably.
| Version | Date | Author | Description |
|---|---|---|---|
| 1.0.0 | 2026-02-26 | WatchDog Security GRC Wiki Team | Initial publication |
