Who we are

Founder and manager (ret.) of the Open Source Intelligence branch of the Dutch Defence Intelligence & Security Service since 1991, Internet since 1990, guest lecturer universities of Texas, Leiden, OSINT researcher, writer, speaker, consultant, OSINT trainer and mentor…

What we do

Reuser’s Information Services is concerned with delivering top class OSINT training programmes, in-hous as well as open, on a variety of levels and capabilities.

OSINT training

We offer a variety of training solutions on different levels to meet the need of our customers, classroom as well as in-house training.

The OSINT Pathfinder is the most popular one: three days of productive but intense work, join the thousands that have done the programme so far!

OSINT news

Our blog with OSINT research tips and techniques, general OSINT related news, and much more. In categories with subscription offers

Our video’s

Have a look at our video’s, podcasts and interviews with our viewpoint towards what constitutes OSINT

Our products

Read about the New OSINT Intelligence Cycle, or pick a few reports on OSINT from our OSINT Bibliography, or use Reuser’s Repertorium to start your OSINT research