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Understand it
MISP is an open-source platform for organizing and sharing threat intelligence. It helps analysts record related observations, add context and connect them with other events. Its value comes from useful information and decisions, not from simply collecting a large list of addresses.
In the fictional workflow, an analyst records a suspicious domain with its source and observation time. Other context helps determine whether to investigate, alert or share it. MISP does not itself guarantee that the domain is malicious.
Under the hood
Events group context. Attributes represent typed values, while objects group related attributes according to templates. Tags and taxonomies express structured labels; galaxies can link richer concepts such as threat actors or ATT&CK techniques.
Correlation identifies relationships such as repeated values across events. Enrichment adds information from other sources, but can introduce errors or disclose queries externally. Distribution settings and sharing groups govern who may receive information; handling labels alone are not access control.
Practitioner perspective
Establish source quality, confidence, retention and sharing policy before automating exports. A to_ids flag can influence detection-oriented exports, but is not a guarantee that a value is safe to block. Different downstream systems need different selection rules.
Measure how intelligence supports hunting, triage and response. Feed analyst outcomes back into sightings and quality review. A correlation is evidence of a connection, not proof that events share an actor or that all related values are malicious.
Watch it work
A fictional, simplified model. Select a component to inspect it, or follow the steps in order.
Explore the system
Indicator
Record a fictional suspicious domain with source and time.
Read every step without animation
Indicator to investigation
- Indicator. Record a fictional suspicious domain with source and time.
- MISP event. Group the observation with its investigative context.
- Enrichment. Add relevant information with provenance.
- Correlation. Compare with existing observations.
- SIEM export. Send only selected, appropriate intelligence to the detection workflow.
- SOC review. An analyst evaluates a matching event.
- Feedback. Record the outcome and update confidence or expiry.
Context and feedback make the observation useful.
Explore deeper: additional experiment
Should this indicator become a block?
Use the indicator as an investigation lead, preserve source context and feed true or false-positive findings back into review.
A local teaching model with fictional inputs. It does not test a live system.
Attack view
A domain from an investigation is correlated with earlier observations. The analyst evaluates whether the relationship supports a detection hypothesis rather than automatically blocking everything related.
Defender view
- Preserve provenance, time and confidence with observations.
- Review distribution and downstream export policy before sharing.
- Feed false positives and confirmed sightings back into the intelligence lifecycle.
Common mistakes
- MISP is not a replacement for a SIEM or EDR.
- A correlated attribute is not automatically a malicious indicator.
Check your understanding
Active recall: explain this idea in 30 seconds
MISP is an open-source platform for organizing and sharing threat intelligence. It helps analysts record related observations, add context and connect them with other events. Its value comes from useful information and decisions, not from simply collecting a large list of addresses.
Now give an example and name one limitation. Revisit the explanation if you get stuck.
Primary sources
Original explanations informed by these specifications and official resources. Source versions and lesson review are separate from product updates.
Content reviewed 2026-09-10. Read the editorial policy.