About me

For up to date information please check linkedin.

Contact: blog@andremarien.be

Business contact: MARSTA

Blog posts

Playing with RSA: signing without the RSA private key 

Attacks targeting data

Managing Technical Security Testing - part 6: reporting and remediation assistance 

Managing Technical Security Testing - part 5: test execution

Managing Technical Security Testing - part 4: test planning

managing Technical Security Testing - part 3: choose the right testers

Managing Technical Security Testing - part 2 - triggers and objectives

Managing Technical Security Testing - part 1 - introduction

Regulation a magical solution?

Regulated or deregulated? 

AI and the Law of Diminishing Marginal Returns

Trends for 2025 – The four headlines

Securing AI systems layer by layer

Managing Technical Security Testing

Ssst! … The backdoor is operational!

Building trust in the security of AI systems 

Abuse categories for Generative AI with illustrating cases and preventive detection

Attackers get the fame, defenders get the blame   

The colorful world of security testing 

Computerinbraak door een interne medewerker

Paranoia, twijfels en veel angst…

One wrong click and you lose... 

The magic of phishing

Relevant previous companies

MARSTA - owner and contractor

Euroclear - Security analyst for key projects & architect IAM, Offensive security, data, appsec trainer

Inno.com- Enterprise architecture, focus security

netvision/ubizen/cybertrust/verizon- more types of jobs than names

Cimad - start of internet projects and full-time security

BIM - Prolog compiler, product manager, AI intro

Education

On the job - most security subdisciplines
KULeuven - Ph.D. computer science engineering