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 […]

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CIA World Fact Book postponed

The World Factbook (WFB) was a popular reference tool for country studies. First launched in 1962 as a printed, classified reference manual, it described in numbers and short texts, the economies, military, geography, agriculture, industries, society, government, people, memberships, energy, health and much more of all the countries in the world, as well as areas […]

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The 2nd Prompt Principle

AI chatbots and LLM’s are an amazingly impressive development that will have a great impact on OSINT and intelligence analysis. Many of you use chatbots may be even on a daily basis for a variety of tasks and assignments, from simple ones to more complex things. And results can be surprising. That is, surprisingly good […]

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Cyberspecialists are doing it wrong.

Many cyber security firms focus on just two main items. The first is tools, technical stuff and software solutions, the other is rigidly ticking off checklists based on international standards and norms of which there are so many. Pretty easy to do and it has led to many cyber companies who may be classified as […]

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OSINT merchandise

In preparation of the upcoming OSINT Pathfinder XLVI training programme the new training support stuff has arrived! Designed by colleague Marjon van Dijk, we now have the pleasure of offering our students the OSINT carrying bag with the OSINT Intelligence Cycle printed on them! We also have the preprint booklets, pencils and a drinking can […]

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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