MISP review: a free, open-source threat intelligence platform for sharing indicators of compromise between security teams. Features, pricing, alternatives.
MISP is a free, open-source threat intelligence platform used to collect, store, correlate, and share cybersecurity indicators of compromise and other threat data between organizations. The project began around 2011, created by developer Christophe Vandeplas to solve the problem of threat indicators being shared informally via email or unstructured documents rather than machine-parsable formats.
Today MISP is developed and maintained primarily by CIRCL, the Computer Incident Response Center Luxembourg, together with contributors from Belgian Defence, NATO's NCIRC, and an international open-source community, with funding support that has included the European Union's Connecting Europe Facility program.
MISP structures threat data as events and attributes, automatically correlating related indicators across the platform and supporting tagging via taxonomies for consistent classification. It supports open standards such as STIX for interoperability and provides a REST API plus the PyMISP Python library for automating integrations with SIEMs and other security tools.
Organizations can control who sees shared intelligence through community and organization-based access controls and distribution levels, and can synchronize with trusted partners or subscribe to curated public MISP feeds and communities for external threat data.
MISP is released under the AGPL open-source license and is free to download, self-host, and modify, with no vendor license fee. Costs are limited to whatever infrastructure an organization uses to host its own instance.
A broader ecosystem exists around MISP including free public threat-sharing communities and commercial vendors that offer managed MISP hosting, integration, or support services for organizations that prefer not to operate the platform themselves.
MISP originally stood for Malware Information Sharing Platform and is now commonly referred to as an open-source threat intelligence platform.
Yes, MISP is free and open-source software released under the AGPL license, with no vendor license fee.
MISP is primarily maintained by CIRCL, the Computer Incident Response Center Luxembourg, along with contributors from Belgian Defence, NATO NCIRC, and an international open-source community.
Security operations centers, CERTs/CSIRTs, government cybersecurity agencies, financial sector ISACs, and enterprise threat intelligence teams commonly use MISP.
Yes, it provides a REST API and the PyMISP Python library for integrating with SIEMs and other security tooling.
Common alternatives include OpenCTI, Anomali, ThreatConnect, and Recorded Future, though MISP is distinguished by being fully free, open source, and community-governed.