Paul de Chassey

👋 Hey ! I'm Paul,
a junior pentester.

I'm passionate about new tech.

More

whoami

Hi, and welcome to my portfolio.

I'm currently a junior pentester, finishing my final-year internship at Wavestone — mostly web pentest & red team implant development.

I studied cybersecurity at EPF (Paris) with a semester at UC Berkeley on the security and AI tracks (CS161, CS188), and graduate in 2026.
Alongside my studies, I served as CIO of EPF Projets, where I ran our infrastructure, deployments, and security, and launched our first CTF event.
I spend most of my off-hours on CTFs (FCSC, TRACS, 404CTF, OSINT Industries, ...) and HackTheBox.

I also have a strong knowledge and great interest in AI models, exploring how machine learning intersects with cybersecurity - both as a tool for defense and as a new attack vector to understand.

Feel free to reach out here.

Skills

⌖ Pentest

Web Physical Network OSINT Reverse Lockpicking BadUSB

あ Languages

Python Bash Java Go Arduino HTML/CSS

⚒︎ Tools

Burp CE Wireshark Metasploit Nmap SQLMap GDB Ghidra MinAtt&ck

⌨ OS

Ubuntu Kali Linux Windows

Experience

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Intern Consultant

Wavestone

March 2026 - Present • Nantes, France

Conducted web application, LLM, and physical penetration tests (Windows workstations) for clients across multiple industries — findings include HTML injection, prompt injection, and context escape vulnerabilities.
Developing a red team implant with proxy bypass and EDR evasion capabilities.

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Chief Information Officer (CIO)

EPF Projets

Aug 2025 - Jan 2026 • Cachan, France

Hardened the internal infrastructure of EPF Projets (Junior Enterprise), managing a team of 8: enforced least-privilege access, reduced the attack surface across internal systems, and drove adoption of security baselines.
Coordinated IT support and tooling for client project delivery. Created the first edition of the CTF Experimental Pwn Field (web, crypto, pwn, lockpicking).

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Consultant

EPF Projets

May - Sept 2025 • Cachan, France

Led the testing phase of a healthcare coordination web platform: functional validation, regression testing, and structured bug reporting.

Education

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University of California, Berkeley

Semester abroad

Fall Semester 2024 • California, USA

CS161 (Computer Security) and CS188 (Artificial Intelligence) — GPA 4.0/4.0.
Covered memory safety, cryptography, web and network security, and modern AI techniques including search, planning, reinforcement and deep learning.

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EPF Engineering School

Major in Digital Engineering

Sept 2021 - Present • Paris, France

Major in Digital Engineering with a focus on cybersecurity: network architecture, applied cryptography, infrastructure security, and DevOps.

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Gerson Private High School

Scientific Baccalaureate

2018 - 2021 • Paris, France

Specialization in Mathematics and Physics-Chemistry.

Contact

Let's connect!

You can reach me directly by email, LinkedIn, or download my CV.