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.
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
Here is an overview of earlier posts on interesting things about OSINT. I call this ‘news’ for sake of convenience.
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
…and how it all gets together Open Source Intelligence (OSINT) is a collaborative, integrated research/production METHODOLOGY to CREATE an actionable
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
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.
Are you ready to learn a proven methodology to find the best open source information out there? Delivered by the
Arno’s Sunday morning OSINT. Updated the Open Source Intelligence Resource Discovery Toolkit on the subject of academic papers (‘Academia’). Now
The worlds longest running OSINT training programme, now for the 46th time in September 2024 […]
<a class="btn btn-secondary understrap-read-more-link"
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.
Building your information profile in OSINT is essential. Below are two OSINT oldies for your reading list, oldies but goodies.
The U.S. Bureau of Intelligence Strategy (IND) as well as the U.S. Intelligence Community have some time ago published their
How to get access to the global open information landscape. OSINT is about open sources. Open sources are all objects
The U.S. Bureau of Intelligence Strategy (IND) as well as the U.S. Intelligence Community have some time ago published their
OSINT is about knowing sources, online as well as off-line. Sources such as directories, records, archives. But also handbooks, online
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
Are you ready to learn a proven methodology to find the best open source information out there? Delivered by the
Arno’s Sunday morning OSINT. Updated the Open Source Intelligence Resource Discovery Toolkit on the subject of academic papers (‘Academia’). Now
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
A copy of your registration form plus further information will be send to your address in a few minutes.
We shall also issue an invoice in the coming days.
Please do not hesitate to contact us if you have any questions!
Marjon van Dijk,
Manager & Hostess
Reuser’s Information Services
