OSINT: Open Source Intelligence Resources
News and resources on open source intelligence (OSINT), with analysis of how it powers threat intelligence, investigations and defense.
OSINT — open source intelligence — is intelligence produced from publicly available, legally accessible information: the web, social media, public records, technical data like DNS and certificate logs, and forums. It is a foundational discipline in threat intelligence, used by defenders, investigators and attackers alike. This page brings together relevant reporting with analysis of how OSINT fits into defense.
How OSINT is used
Defenders use OSINT for threat intelligence (tracking actors and monitoring for emerging threats), attack-surface management (discovering their own exposed assets and leaked credentials before attackers do), investigations, and brand protection. Attackers use the same techniques for reconnaissance — gathering employee details to craft convincing spear-phishing lures, or mapping an organization's technology to find weak points. Understanding OSINT is therefore both an offensive and defensive necessity.
Discipline matters
OSINT sounds simple because the information is public, but doing it well is hard. The challenges are volume and noise, verification (public does not mean true), source reliability, operational security (investigating a target can tip them off), and ethics. Professional OSINT follows the discipline of the intelligence cycle: clear requirements, deliberate collection, rigorous verification, careful analysis and responsible reporting.
What to watch
- Exposure of your assets — leaked credentials, open services and misconfigurations surfacing publicly.
- Reconnaissance signals — indications that your organization is being researched.
- New tools and techniques in the OSINT community.
Learn more
One of the highest-value OSINT habits for defenders is simply staying systematically aware of the public threat landscape — which is exactly what an aggregated, deduplicated feed automates. Our guides cover OSINT, open-source threat intelligence tools, and dark web monitoring.
The live feed below surfaces relevant public reporting in real time.