Jean-michel Besnard
Partner - Cybersecurity Audit & Advisory at Grant-Thornton France
France
Summary
🤩
Rockstar🎓
Top SchoolJean-michel Besnard is a cybersecurity audit and advisory partner with nine years in senior advisory roles and a 20+ year technical career bridging security operations, audits and hands-on engineering. He leads regulatory-focused assurance work including SOC 2, ISAE3402 and French ANJ iGaming certifications while advising on ISO27001, NIS2, DORA, cloud security, AD hardening, red teaming and digital forensics. Comfortable with both board-level governance and technical delivery, he also provides CISO-as-a-Service and builds internal control programs that scale across cloud and legacy estates. His background spans Big Four firms and industry (Grant Thornton, Mazars, Nokia) and is grounded in a Distinction MSc in Biometrics, reflecting a strong foundation in identity and authentication. Notably, he combines accredited regulatory certifier experience in a highly regulated sector (iGaming) with pragmatic penetration testing and architecture review skills that help translate compliance into measurable security outcomes.
9 years of coding experience
17 years of employment as a software developer
B.Sc, Computer Science & IT Security, B.Sc, Computer Science & IT Security at Sheffield Hallam UniversityM.Sc., Biometrics (with Distinction), M.Sc., Biometrics (with Distinction) at University of WestminsterDUT, Computer Science, DUT, Computer Science at IUT de Vannes
English, German, Chinese
Github Skills (18)
http-authentication10
graph-database10
miner10
security10
active-directory10
cypher10
ntlm9
mdns9
authentication8
ldap7
ftp7
http7
microsoft-sql-server7
internals3
windows1
Programming languages (4)
Github contributions (5)
AD-Security/AD_Miner
Oct 2023 - Jan 2026
AD Miner is an Active Directory audit tool that leverages cypher queries to crunch data from the #Bloodhound graph database to uncover security weaknesses
Contributions:117 reviews, 28 PRs, 23 pushes in 2 years 4 months
active-directorycyphergraph-databaseminersecurity
n3rada/AD_Miner
Oct 2023 - Oct 2023
AD Miner is an Active Directory audit tool that leverages cypher queries to crunch data from the #Bloodhound graph database to uncover security weaknesses
Contributions:1 push in 1 day
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