Who We Are
Built by Offensive Security Experts
Gargantum is developed by HDWSec, a French cybersecurity firm specializing in offensive and defensive security.
France Cybersecurity
HDWSec is a French company specializing in offensive and defensive cybersecurity. With deep expertise from its founding team, HDWSec serves governments and major enterprises across Europe.
Gargantum was born from HDWSec's daily work in penetration testing, threat intelligence, and dark web investigations, built by practitioners who understand real-world threats.
Visit hdwsec.frFrench Company
Based in France
France Cybersecurity
Certified since 2025
Govs & Enterprises
Trusted clients
Offensive Security
Pentest & Red Team
The Team
The People Behind Gargantum
Gargantum is built by the co-founders of HDWSec and their team, bringing years of hands-on experience in offensive security and threat intelligence.
Jean K.
Co-founder & CEO
Former cyber warfare expert at the Ministry of the Interior. Reverse engineering & pentest expert.
Pierre D.
Co-founder & CTO
Former cyber warfare expert at the Ministry of the Interior. Cyber dev & red team expert.
Thomas R.
Engineer
Cybersecurity engineer. Pentest application specialist, focused on AI and big data.
Client Reviews
Trusted by Security Teams
See how our clients leverage Gargantum to stay ahead of threats and protect their organizations proactively.
"Since deploying Gargantum, we have cut our incident response time in half. The platform flags leaked credentials as soon as they surface, giving us a critical window to act before attackers can exploit them. It completely changed how we approach threat prevention."
Sofia R.
CISO, Major French industrial group
"The daily automated monitoring gives us complete visibility on our exposed credentials. We went from reactive incident response to a truly proactive security posture. Gargantum is now a core part of our defense strategy."
Laurent M.
Head of IT Security, International luxury brand
"We discovered employee credentials circulating on the dark web that we had no idea about. Thanks to the early alerts, we locked down the compromised accounts and prevented what could have been a major breach."
Nicolas B.
SOC Manager, European financial institution
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