French cybersecurity engineer, in love with Switzerland and cheese 🇨🇭🫕

I enjoy cyber for 3 things: adrenaline, challenges and learning. I hope my articles will help you!

Feel free to reach out ;)

Certifications

  • March 2025 - OSCP & OSCP+
  • May 2024 - Swiss A1/A3 drone operator
  • May 2024 - Burp Suite Certified Practitioner (BSCP)

Skills

  • Web client & server exploitation
  • Programming: PHP, Python, Rust, Java, C#…
  • Forensics (memory, network, disk)
  • Red Team environment knowledge
  • Reverse (android, .NET)
  • Active Directory exploitation
  • Privilege escalation
  • Blockchain Web3 audit
  • Virtualization (Docker, Proxmox)
  • Electronics (ESP32, Arduino…)
  • 3D Design
  • Firewall (OPNsense)

Soon

  • Stealthy exploitation
  • Hardware hacking

Conferences given

TypeTitleYearEventComment
ConferenceAdvanced shoemaking2023ESN’HACKBotting techniques
RumpThe good dummy2023ESN’HACKAutomated scraping
ConferenceOSS 503: Kevin is not responding2022ESN’HACKDDoS techniques
WorkshopAndroid reverse2022ESN’HACKBasics
RumpPanic to crit2022ESN’HACKpwn2learn 2022 feedback
Conf & WorkshopIn the land of XSS2021ESN’HACKComplex XSS
Conf & WorkshopJourney to the center of XSS2020ESN’HACKBasic XSS

Competitions

DateNameChallenges doneResultsComment
29 June 2023pwn2learn bug bountyUnauth. to admin (9.8 CVSS)Most impactfulFound on COREFF brewery operations software
6 April 2023European Cyber Cup (EC2)Web, Forensic, OT1st team
12 May 2023HeroCTF v5Web, Blockchain, OSINT, MISC1st team
2 Dec. 2022HackTheBox University CTFWeb2nd teamSame points as the 1st team but flagged 10mn after :(
16 Nov. 2022European Cyber Week (ECW)Web, MISC1st team
4 Nov. 2022Unlock Your Brain CTFPentest2nd teamAttack-defense CTF type
8 June 2022European Cyber Cup (EC2)Web, Forensic, Bug Bounty3rd team
29 May 2022HeroCTF v4Web, Blockchain, OSINT1st team
1 April 2022BreizhCTFWeb, Blockchain, Pentest4th team1st students team
12 Jan. 2022pwn2learn bug bountyUnauth. to admin (9.6 CVSS), DoS (7.4 CVSS)1stBiggest live bug bounty event with students. Found on 6tzen, CSPN certified, used by many french governement services.
17 Nov. 2021European Cyber Week (ECW)Web, Forensic, MISC1st team
9 Sept. 2021European Cyber Cup (EC2)Web, Forensic, Bug Bounty1st team
28 Aug. 2020ESN’HACK CTFWeb, MISC1st team
May 201924 hours of Technology UniversitiesWeb dev, CTF2nd team1st team in cybersecurity

Achievements

DateNameComment
2023Chall. MidnightFlag CTFCreated web challenges
Nov. 2022ESNA’s websiteesna.bzh, voluntarily developed with a friend
26 Oct. 2022Hack in ParadizeCTF created for the Caribbean Cybersecurity Conference
2022Chall. MidnightFlag CTFCreated web challenges
2021ESN’HACK’s websiteesnhack.fr, voluntarily developed
2019Fundraising ‘Mille et un sourires’Developed a fundraising website
2017Anti-Theft appDeveloped in Java, created in a team for a school exam

Cyber life in a nutshell

  • since May. 2025

    CTO at HoneyBadger Consulting GmbH (Zurich)

  • since Oct. 2023

    Pentester at Deloitte (Zurich)

    Web and mobile application audits for swiss banks.

  • Sept. 2023

    Cybersecurity engineer - CNAM & ESNA

    Thesis on minimizing compromise indicators during attacks on common infrastructures.

  • 2022-2023

    Pentester at Acceis (Rennes)

    Apprenticeship, web and infrastructure penetration testing.

  • Sept. 2022

    Architecture designer, cybersecurity course - CNAM & ESNA

  • Apr. 2022 - Sept 2023

    Conference manager - ESN'HACK

  • 2020-2022

    Drone designer at *********

    Apprenticeship, designing and autonomously building a secure and non-signaling cargo drone.

  • Feb. 2021

    Founder member - Medus'Hack

  • Sept. 2020

    IT Technology University Diploma

    Option “Advanced Computer Course”. Favourable opinion for engineering schools.

  • 2019-2020

    Web developer at Wixiweb (Rouen)

    Apprenticeship, learned to integrate mockups, programmed on specific PHP frameworks.

  • 2018

    Scientific Baccalaureate

    Option “Computer Science and Digital Sciences”, obtained with highest honors