- Open Source Intelligence Techniques (Michael Bazzell) — Comprehensive OSINT book and toolkit
- Bellingcat OSINT Guides — Investigative journalism and OSINT techniques
- OSINT Techniques (Sector035’s Curated Lists) — Weekly curated OSINT links and guides
- Verification Handbook — Guide to verifying digital content and user-generated media, written by journalists from major newsrooms
- GIJN Resource Center — Library of 2,000+ guides, tipsheets, and databases for investigative journalists, in 14 languages
- Psychology of Intelligence Analysis (Richards J. Heuer) — Classic CIA Center for the Study of Intelligence book on cognitive bias and analytic reasoning
- Handbook of Collective Intelligence (MIT) — Research and methodology (academic)
- DataExpert — Training, software, and services for OSINT, cybercrime, and cryptocurrency investigations in Europe
- OSINT Dojo — Free structured learning path for OSINT
- OSINT Curious — Blog, podcast, and tutorials (archived but valuable)
- Trace Labs OSINT VM & CTFs — Virtual machines and OSINT competitions
- Quiztime — Daily OSINT challenges on Twitter/X
- I-Intelligence — European provider of intelligence training for OSINT, analysis, and more
- Bellingcat Workshops — Paid training on open source investigations
- Kase Scenarios — Immersive free and paid OSINT scenarios to learn and train skills
- Gralhix — Free OSINT exercises, tutorials, and articles from beginner to expert level
- Maltego Academy — Online learning platform with training for investigations in Maltego
- OpenSecurityTraining2 — Free, open-source cybersecurity classes organized into structured learning pathways
- SecJuice — Articles on OSINT, infosec, and cyber investigations
- SANS OSINT — Professional OSINT training, articles, and free resources
- Nixintel — OSINT and investigation blog with tutorials and tool write-ups
- OSINTrack — Searchable directory of 500+ OSINT tools and resources
- OSINT Framework — Browsable directory of OSINT tools and resources organized by category
- Awesome OSINT — Curated GitHub list of open source intelligence tools and resources
- Awesome Threat Intelligence — Curated GitHub list of threat intelligence resources, platforms, and frameworks
- CyberWire Daily — Cybersecurity news and OSINT-adjacent podcast
- Microsoft Threat Intelligence Podcast — Podcast by Microsoft about threat intelligence, APTs, malware, and actor tradecraft
- Adversary Universe — Podcast by CrowdStrike exploring global threat actors and intrusion operations
- Intel 471 Podcasts — Podcast by Intel 471 covering threat actor profiling, cybercrime intelligence, and dark web insights
- Talking Threat Intelligence — Podcast by Recorded Future about building and using cyber threat intelligence programs (last listed episode January 2024)
- CTG’s Threat Intelligence Podcast — Podcast by The Counterterrorism Group discussing CTI, terrorism, and global risks
- Cyber Threat Intelligence Podcast — Independent podcast discussing modern CTI frameworks, detection, and mitigation (last listed episode August 2025)
- Darknet Diaries — Podcast by Jack Rhysider featuring true stories from the dark side of the internet and cyber operations
- Beers with Talos — Podcast by Cisco Talos discussing incident response, threat research, and security trends
- Risky Business — News and commentary podcast and newsletters for cybersecurity and intelligence professionals
- Click Here — Weekly podcast from Recorded Future News about how technology is changing the world, including cybercrime and cyber operations
- From The Source — OSINT podcast interviewing professionals by BlackDot Solutions
- The Pivot — OSINT podcast interviewing professionals by Maltego (last listed episode November 2023)
- NeedleStack — Podcast by Authentic8 about OSINT techniques, online investigations, and research tools
- Open Secret — Podcast by OSINT Combine covering open source investigations, intelligence ethics, and analysis workflows
- The OSINTion Podcast — Podcast by The OSINTion focusing on OSINT tradecraft, investigations, and analyst development
- OSINT with ShadowDragon — Podcast by ShadowDragon about OSINT tooling, digital footprints, and real-world investigations (last listed episode February 2025)
- The World of Intelligence — Podcast by Janes about open-source intelligence, defense analysis, and global security trends
- Cloak & Dagger — Independent OSINT podcast analyzing conflicts, disinformation, and investigative methods (last listed episode December 2023)