Operationalizing MISP Threat Feeds

Note: This skill covers a defensive threat-intelligence platform. Handle ingested intelligence according to its Traffic Light Protocol (TLP) marking and your sharing agreements. Treat ingested IOCs as potentially sensitive.

Overview

MISP (Malware Information Sharing Platform) is the de-facto open-source threat-intelligence platform for storing, correlating, and sharing structured indicators (IOCs), events, galaxies (threat-actor/technique knowledge), and objects. Running a MISP instance is only the first step; the value comes from operationalizing it — curating high-quality feeds, suppressing false positives with warninglists, and pushing the resulting IOCs into detection tooling so intelligence actually drives blocking and alerting.

A feed in MISP is a remote source (another MISP, a CSV/freetext list, or a structured collection) that you enable and optionally cache. Caching pulls the feed's IOCs into the instance's Redis-backed cache so values can be correlated and looked up in real time (e.g., a SIEM asking "have you seen this domain?") without importing every event. Curation matters: enabling every public feed produces …