Intelligence and Threat Hunting Collection Sources

This is a working reference of intelligence and hunting sources (and a few tools), organized by intel and hunting hypothesis types. No single source covers everything. Good analysis requires using the Mosaic Theory of intelligence, whereby an analyst layers data and information from multiple independent and overlapping sources to produce a wider variety of facts and conclusions with higher confidence.

Each source is labeled: Free (no cost, no account required), Free tier (meaningful free access with paid options), or Commercial (requires paid subscription for meaningful use).