Basel Institute OSINT resources
Anti-corruption and financial investigation training, including free eLearning.
Bellingcat Guides
Free how-to articles on open-source investigation techniques.
Blue Team Labs Online
Defensive security challenges and investigations.
CISA Free Cybersecurity Services
CISA's catalog of free services and tools for defenders.
Cybrary
Online cybersecurity courses and career paths.
First Draft / Information Futures Lab
Archive of verification and misinformation research training.
GIJN Resource Center
Global Investigative Journalism Network guides and tipsheets.
Hack The Box
Hands-on offensive and defensive security labs and certifications.
IntelTechniques
Michael Bazzell's OSINT and privacy books, podcast and training.
LetsDefend
SOC analyst training platform with simulated alerts.
My OSINT Training
Self-paced OSINT courses from beginner to advanced.
NICCS Training Catalog
US government catalog of cybersecurity training and education.
OffSec
Creators of OSCP and Kali; rigorous hands-on certification training.
OSINT Combine
OSINT training courses and free investigation tools.
SANS Institute
Industry-leading security training and GIAC certifications, including OSINT (SEC497).
SANS Webcasts
Free webcasts on intel, DFIR and security topics.
Trace Labs
Crowdsourced OSINT CTFs that help find missing persons.
TryHackMe
Gamified, browser-based security labs for all skill levels.