After this lesson, you will be able to: Define threat intelligence and what it provides defenders.
Threat intelligence is structured knowledge about adversaries, who they are, what they want, what tools they use, how they operate. It transforms reactive 'patch when alerts fire' into proactive 'patch what we know is being exploited'.
Strategic, board-level: who threatens our industry? Trend reports, geopolitics. Operational, campaign-level: who's targeting us right now? Group profiles, TTPs. Tactical, atomic: which IPs, hashes, domains are bad right now? IoCs, feeds.
Inputs: open source (blogs, Twitter), commercial feeds (Recorded Future, Mandiant), ISAC sharing, internal IR data.
Outputs: blocklist updates, hunt hypotheses, exec briefings, detection content (Sigma rules, YARA).
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