TGI's SigRedux-course helps you systematically reduce your footprint during online activities such as OSINT Research.

By preventing being identified by your current persons of interest, both your own and your employer's security is better protected. It also prevents any alarms from going off that could potentially cause a project's or operation's failure.

Expert Guidance

Unique expertise because of a background in Dutch intelligence services

Proven Effectiveness

Instructors with relevant operational intelligence expertise

Differing Skill Levels

The course is tailored to the professional context, level of expertise, and requirements of participants

Practical and Interactive

Energetic, challenging courses focused on gaining functional skills

Why Signature Reduction 

Open-source online research is the first logical step in almost any investigative case or project. Many investigators or operators are however unaware of the subtle traces they may leave behind while engaging in this initial probing activity – and as such are at risk of compromising their person, operation, or organization.

You might for example anonymously check a person of interest’s profile today, but subsequently show up in their list of recommended connections tomorrow. Or an aggressive party might notice that their website has been accessed by your phone, and decide to retrieve which WiFi-networks it has made contact with in the past – subsequently identifying your home address.

TGI’s Signature Reduction Course teaches a proven SIGREDUX-method through practical scenario’s, familiarization with tools and techniques, and foundational and theoretical knowledge. The core objective of this course is to teach valuable new skills that enable the participants to identify the risks and opportunities of doing online research and help them become even more resilient while doing so.

Signature Reduction

A flexible course of three days for groups of 6-15 persons.

Contact us!

“Just sit in the corner there, that your footprints may not complicate matters."

Sherlock Holmes

Our clients say

"Has exceeded my expectations!"

Participant U2E

“Learned much in terms of methodology, but also about myself. Pleasant way of sharing knowledge, assignments, atmosphere, examples.”

Participant U2E

“The strongest aspect of the course was formed by the trainers in my opinion. People from the field that have mastered their knowledge and are considerate towards the prior knowledge of course-participants."

Participant U2E

“It is the combination of everything that makes the course so strong in its totality (method, teachers, theory, practical application, timing of the breaks, location, food, etc.)"

Participant U2E

"Thanks for the most interesting experience of the past years!"

Participant U2E

“It was great! It has given me a lot professionally! It is impossible to keep looking at things the same way."

Participant U2E

I have never followed such a nice training before! The variety was good, but especially the surroundings, the trainers and the other staff were super. It was also very nice that both Ray and Onno visited us and were genuinely interested in us. We were not just a number. For me, this week has really given me a lot. I have grown in knowledge, but also personally this training has brought me a lot.

Course participant, Observation training

"I very much enjoyed the course. The teacher was excellent! A very good instructor."

Cursist, OSINT Scout Course

"This should be mandatory training for everyone conducting internet-based research."

Cursist, OSINT Master Course

"This course has made me realise how amateurish my research methods have been. I wish I had this training 4 years ago! This has been the most practical/applicable training I have received so far."

Cursist, OSINT Pathfinder Course

"Wow! Top training, really puts your mind to work."

Cursist, OSINT Pathfinder Course

"This course has been the most relevant to my day-to-day job that I have ever attended. I will use what I have learnt on a daily basis. I would definitely recommend this course to others!"

Cursist, OSINT Pathfinder Course

Student Military Build-Up Program

The world contains two groups of people; the ones that are educated by Arno Reuser and the ones that aren't... and that's factual. Keep on teaching Arno!

Cursist, OSINT Pathfinder Course


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