OSINT Unlocked

Here is our overview of current and earlier posts on OSINT. For now, we have three categories: OSINT news, OSINT reading and OSINT training

OSINT Training will be devoted to current and upcoming training possibilities as well as tips, techniques and tools.

Latest post

Open Source Intelligence Overview

Blush. The video is a TEDx talk I did for TEDxTwenteU in 2025 about open source intelligence that designed and managed since 1990 for the Dutch Defence Intelligence Service for about 23 years. 

May be have a look? Let me know your thoughts or questions.

More on OSINT training: https://www.opensourceintelligence.biz

 

OSINT news posts

Here is an overview of earlier posts on interesting things about OSINT. I call this ‘news’ for sake of convenience. 

The OSINT Bibliography now holds about 150 titles of reports, papers and books on open source intelligence. Most links are

A question I am often asked by enthousiasts is how to explore the fascinating world of OSINT. My own journey

Future OSINT plans The future of our OSINT range of training programmes looks ever more promising. The OSINT Pathfinder range

I am very happy with all OSINT enthousiasts out there, but sometimes enthousiasm may be a little bit misleading. Below

The latest version includes a Safety Check tool that now runs in the background to warn you of compromised passwords

By Zoe Kleinman & Imran Rahman-Jones BBC News Government minister Penny Mordaunt is the latest witness in the government’s Covid

OSINT training, teaching, learning

Information and developments on training, workshops, consultancy, advice and more. 

Tips, things to do, things NOT to do, tools, things that are useful at the practitioners level.

Proud to announce our first OSINT Intelligence Analysis training programme! Four days of hard work, starting with the fundamentals of

This series of posts will hold information on learning possibilities offered by Reuser’s Information Services. We shall also cover consultancy

We are very proud to announce the 50th OSINT Pathfinder training programme to be delivered in November 2024! Continuously developed,

While Google Guessing is by far the most popular universal search strategy used today, information professionals such as OSINTians, use

OSINT Search Strategy #1 : ”Google Guessing”. Regardless the subject, regardless the purpose or goals, the by far majority of

OSINT reading

Here is an overview of posts on recommended reading material on OSINT. It contains links to books, reports, papers and sometimes presentations. 

The full OSINT bibliography may be found at the OSINT Treasure Trove.

Open-Source Intelligence (OSINT) is the process of collecting, analysing, and utilizing information that is publicly and commercially available to support

Essential OSINT reading for this week: Open source investigations in the age of Google / Wilson, Henrietta ; Samuel, Olamide

Essential OSINT reading for this week. Building your information position on OSINT is essential when you are in the OSINT

Essential OSINT reading for this week. Building your information position on OSINT is essential when you are in the OSINT

Essential OSINT reading for this week. Building your information position on OSINT is essential when you are in the OSINT

Essential OSINT reading for this week. Building your information position on OSINT is essential when you are in the OSINT

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Earlier posts

Blush. The video is a TEDx talk I did for TEDxTwenteU in 2025 about open source intelligence that designed and

The World Factbook (WFB) was a popular reference tool for country studies. First launched in 1962 as a printed, classified

In the meantime, AI agents behaviour is remarkbly similar. I use ChatGPT, Perplexity, Copilot and Gemini hoping that the answers

AI chatbots and LLM’s are an amazingly impressive development that will have a great impact on OSINT and intelligence analysis.

Proud to announce our first OSINT Intelligence Analysis training programme! Four days of hard work, starting with the fundamentals of

…and how it all gets together Open Source Intelligence (OSINT) is a collaborative, integrated research/production METHODOLOGY to CREATE an actionable

Many cyber security firms focus on just two main items. The first is tools, technical stuff and software solutions, the

So I ask OSINT students to solve a modest research assignment any way they see fit. They all listen carefully

Google has a few ways of limiting results by date. It used to be just using daterange: which required a

The OSINT Bibliography now holds about 150 titles of reports, papers and books on open source intelligence. Most links are

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Marjon van Dijk,

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Reuser’s Information Services