Your Cybersecurity Consultant

Technical Expertise & Experience

Nicolas Duvoisin

Nicolas Duvoisin

Gr3yM00n
Founder & Pentester

After several years of intensive pentesting experience in specialized firms, I chose independence to practice my craft with more freedom and impact. Passionate about technology and holding recognized certifications, I am fully committed to raising my clients’ security level against today’s threats.

Choosing a freelancer means efficiency, proximity, and cost control. Without a heavy structure or intermediaries, you pay directly for technical expertise instead of overhead. I’m your single point of contact from scoping to final delivery, which ensures fast response, tailored follow‑up, and services that are often more competitive than a traditional firm.

Background & Activities

Pentester

3+ years of experience in offensive cybersecurity.

Bug Bounty

Bug hunting and vulnerability reporting on public and private programs.

Missions

Over a hundred penetration tests performed.

CTF Player

Regular participation in Capture The Flag competitions.

Ready to secure your infrastructure?

Don't wait for an incident to act. Let's discuss your needs and define the scope of your audit together.