Threat intelligence is evidence-based knowledge about cyber threats – who the attackers are, what they want, how they operate and which indicators reveal them – used to make better security decisions.
How threat intelligence works
Raw data such as malware samples, logs, dark web posts and reports becomes intelligence only after collection, processing, analysis and delivery to someone who acts on it – the so-called intelligence cycle. Four levels are usually distinguished:
- strategic – trends and risks for executives, such as which groups target your industry;
- operational – details about specific campaigns and their goals;
- tactical – attackers’ tactics, techniques and procedures (TTPs), often mapped to MITRE ATT&CK;
- technical – machine-readable indicators of compromise for blocking and detection.
Sources include commercial feeds, government CERT advisories, industry sharing groups (ISACs), open-source intelligence (OSINT) and an organization’s own incidents. Platforms like MISP and OpenCTI store and share the data in STIX/TAXII formats.
Why threat intelligence matters for security
No organization can defend against everything. Threat intelligence helps focus: which vulnerabilities are being exploited right now, which APT or ransomware groups are active in your sector, which leaked credentials of your employees are on sale. It feeds the SOC, vulnerability management and risk decisions. Its value depends on relevance and timeliness – a huge feed of stale indicators just creates noise.
Best practices
- Define intelligence requirements: what decisions should it support?
- Combine external sources with lessons from your own incidents.
- Integrate technical intelligence into SIEM, EDR and firewalls automatically and measure its usefulness.
- Share what you learn – collective defence works best.
