Marc Lebrun
Penetration Tester
Saint-Herblain, Pays de la Loire, France
Summary
👤
Senior🎓
Top SchoolMarc Lebrun is a seasoned penetration tester with 11 years of experience specializing in network and system attack scenarios, Red Team engagements, and bespoke R&D tooling. Currently at La Poste Groupe, he strengthens offensive capabilities and shapes security awareness while previously leading pentesting teams and operations at DIGITEMIS. He combines deep technical chops—from Active Directory and Windows auth research to mobile/IoT reverse engineering—with hands-on development of custom exploitation and testing tools. An educator-turned-practitioner, he taught low-level programming, reverse engineering and web security at EPITECH, which informs his methodical approach to complex environments like SAP, Citrix and enterprise Exchange. Based in Saint-Herblain, France, he still programs hacking tools and tinkers with unlikely electronics in his spare time, reflecting a long-standing curiosity predating modern exploit kits and ransomware.
11 years of coding experience
8 years of employment as a software developer
EpitechBTS (French Degree), Horticulture, Biology, BTS (French Degree), Horticulture, Biology at Ecole Supérieure d'Agriculture d'AngersBaccalauréat, Scientific, Baccalauréat, Scientific at Colbert High SchoolMSc, Computer Security, MSc, Computer Security at University of Kent
French, English
Github Skills (33)
termux10
chromebook9
proot9
linux-distribution9
linux9
android9
vnc-server9
chroot9
spooler8
build-system7
french7
privilege6
exploit6
scraper6
cve5
Programming languages (5)
Github contributions (5)
mclbn/dotfiles
Nov 2015 - Mar 2025
Contributions:172 pushes, 1 branch in 9 years 6 months
mclbn/zsh-functions
Nov 2015 - Sep 2024
Contributions:23 pushes in 9 years
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