About Defants

Defants provides innovative Solutions and Professional threat investigation Services for all businesses.

Founded in 2021, Defants aims to help organizations detect, analyze and respond to cyber threats faster and more efficiently.

Logo Gartner Cool Vendor 2023

Gartner Cool Vendor 2023

One of the achievements that Defants is proud of is being recognized by Gartner® as a Cool Vendor for Modern Security Operations Center in 2023.

This recognition validates Defants’ vision and value proposition, as well as its ability to deliver cutting-edge solutions to its customers. Defants is honored to be among the select few companies that Gartner considers to be innovative, impactful and intriguing in the security market.

The founders of Defants reunite

Our Vision

“We founded Defants, a software company that aims to redefine Digital Forensic and Incident Response (DFIR) and go beyond the state of the art, offering a new way of investigating, with semantic investigation. Today, we provide a modern investigation tools that support and enhance experts.

We put people at the center of the process and technology equation, and add value to DFIR teams with our no code SaaS platform, Defants vSIRT.”

He is one of the co-founders of Defants, as well as its CEO.


François Khourbiga

François Khourbiga, CEO of Defants, worked for the Prime Minister’s office at the National Cybersecurity Agency of France (ANSSI). After that, he worked for the French Ministry of Armed Forces as a cyber defense engineer, then as a technical team leader at Orange Cyberdefense.

In 2019, he completed an Executive Master’s degree in innovation management at the École Polytechnique to turn his business project into reality. In the meantime, he joined Mandiant as an Incident Response Consultant to respond to the most modern cyberattacks.

An intellectual and practical path designed to reflect on innovation and consolidate his business management skills.

He's the COO of Defants


Thomas Maréchal

Before cybersecurity, Thomas Maréchal, COO of Defants, was the manager of a fishmonger’s shop. Following a personal injury that disabled him for almost two years, he decided to retrain in software development. He took courses at ENI Informatique, from which he graduated with a Bac +4 “Computer Designer-Developer”.

A year later, he completed his training at IMIE, a digital school, with a diploma in information systems engineering and management. For four years, he worked at Orange Cyberdefense, where he met François.

Defants' CFO


Maxime Lebreton

Passionate about financial analysis and technologies, he worked for 10 years in Societe Generale bank group as an account manager for SME’s. For him, assisting CEOs structuring M&A operations, internationals transactions or cash-management strategy has been as much a challenge as an opportunity that he has been pleased to take on.

Meanwhile, he taught financial engineering during four years at the University of Economic Sciences of Rennes, 10 years after studying in the same faculty.
Always seeking challenge, as Defants’ CFO, he bring his expertise in all financials subjects.