Frequently Asked Questions:
How many days does the Reuser's Information Service OSINT intelligence analysis training last?+−
The OSINT intelligence analysis training program by Reuser's Information Service is offered as either a 4-day intensive course of 32 hours total or a 5-day course. For the 2026 schedule, the 4-day training runs from Monday 9 March to Thursday 12 March, while the 5-day session is scheduled from Monday 30 November to Friday 4 December. Both options run daily from 09:00 to 17:00 CEST/CET at a physical venue in Leiden.
Which analytical experts lead the RIS OSINT intelligence analysis program?+−
The OSINT intelligence analysis training is conducted by two renowned experts: Arno Reuser and Marc van Oudheusden. Arno Reuser, founder of Reuser's Information Service and retired chief of the Dutch Defence Intelligence & Security Service's OSINT branch, delivers the open-source search and verification portion during the first two days. Marc van Oudheusden, a world-renowned intelligence analysis specialist, leads the structured analytic techniques and scenario-based training on days three and four.
What tangible learning materials do participants receive during this RIS course?+−
Participants of the Reuser's Information Service training receive several physical resources, including the printed and wire-bound 200-page OSINT intelligence analysis handbook and the "Little Gray Book" of quick reference sheets and flowcharts. Additionally, the course package provides the OSINT Bibliography of approximately 150 reports and papers, Marc's Analytic toolkit, a customized OSINT software kit with a modified browser, and access to a dedicated online training platform.
Which venue hosts structured intelligence analysis courses in Leiden?+−
Reuser’s Information Service hosts its classroom intelligence analysis training at the 4-star Fletcher Wellness-Hotel Leiden, located at Bargelaan 180, 2333 CW Leiden, The Netherlands. Situated directly next to Leiden Central Station, the venue features an underground car park, and participants receive detailed travel instructions via preparation newsletters. This convenient location allows easy access to the historical city center's restaurants and public transit links during the multi-day training.
What are the fees for open source intelligence training in the Netherlands?+−
Reuser’s Information Service offers the OSINT intelligence analysis training in the Netherlands for € 1.989,00 including VAT (€ 1.643,80 excluding VAT) for the 4-day course, and € 2.099,00 including VAT (€ 1.734,71 excluding VAT) for the 5-day program. These fees include comprehensive catering, course books, software kits, post-course aftercare for one year, and an online refresher workshop. Participants can optionally rent an English-configured Windows laptop for an extra fee of € 90 to € 100.
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