Freelancer profile translated to English.

Back to original language

Description

EFREI graduate in Cybersecurity, specialized in offensive security/pentest, audit, and infrastructure security.

I offer penetration testing and security audit services for SMEs and startups.

Based in Marseille, immediately available, remote possible.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Marseille (up to 50km)

Aexin
Technical Internship M1 & M2
January 2024 - January 2025 (1 year)
Geneva, Switzerland
▸ Deployment and management of an EDR/EPP in a corporate environment
▸ Development of a security audit tool based on NIST 2.0 framework
▸ Creation of an operational phishing server
▸ Design of a complete SOC POC with attack and SOC response simulation
▸ Python/Bash scripting for security task automation
▸ Use of Netwrix Auditor for IT Governance
▸ Intensive pentest training on HackTheBox
Pentesting Security Operation Center Network Security Scripting Security Audit
EFREI
PA8 - Secure Corporate Infrastructure
January 2024 - April 2024 (3 months)
Villejuif, France
Deployment and security of a corporate-type infrastructure on
ESXi in a team of 8.
Dual pfSense + OPNsense firewall, Samba, Postfix, DNS, PKI,
Proxy/Reverse Proxy, Wazuh agents, WSUS, backup
• Attack simulation — forensic investigation report and
formal risk analysis
Infrastructure Security Security Audit Risk Analysis System Administration Forensics
EFREI
Cybernight - CTF
September 2020 - September 2025 (5 years)
Villejuif, France
Participation in 3 editions of CyberNights, a CTF organized by EFREI
in a team of 5, a 12-hour non-stop event (6 PM - 6 AM).

Challenges covering all offensive categories: web exploitation,
forensics, cryptography, scripting, and reverse engineering.

Constant progress over the 3 editions with a best result of top 6 out of 100 participating teams.
Scripting Pentesting Web Security Cryptography Forensics

Be the first to recommend Esteban

Help this freelancer shine by sharing your experience working together.

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

Baptiste Duhen

Fullstack developer

4.6

(4)

Amed Hamou

Senior Lead Developer

(2)

Audrey Champion

Web developer

4.3

(3)

Signup to reveal

Master Cycle M1/M2 - Cybersecurity & Cloud Major
EFREI Paris, Engineering School of Digital Technology
2025
Spécialisation en Cybersécurité & Cloud
International Mobility
Concordia University
2022
Mobilité internationale

Check out Esteban's education

Cybersecurity Expert

Esteban Duffourg

Cybersecurity Consultant - Pentest & Audit

About Esteban

Experience

Recommendations

These freelancer profiles also match your criteria

Education

Skill set

Categories