Fleuret AI Raises €4M Pre-Seed for Agentic Penetration Testing Platform

Fleuret AI, a Paris-based cybersecurity startup founded in 2026 by Yanis Grigy and Augustin Ponsin, has raised €4 million in pre-seed funding. The round was led by RAISE Ventures and announced on October 5, 2026.

What Fleuret AI Does

Fleuret AI automates penetration testing with agentic AI. Its platform runs continuous pentests on web applications and APIs using two AI agents, Emile and Champollion. According to the company, these agents map the attack surface, exploit vulnerabilities, and attach a proof of compromise to every finding.

The continuous nature of the platform contrasts with traditional periodic pentesting, where assessments occur at intervals and can leave gaps between tests. By running continuously, Fleuret AI aims to keep pace with changes in web apps and APIs as they are updated.

Findings are hosted on European cloud provider Scaleway, a detail that may matter to customers with data residency or sovereignty requirements.

Customers

Fleuret AI's customers include Brevo, Stoïk, and Yogosha. These reference customers span marketing technology, insurance, and cybersecurity services, suggesting early adoption across different sectors that rely on web applications and APIs.

Funding Details

Round type: Pre-Seed
Amount: €4,000,000 EUR
Announced: October 5, 2026
Lead investor: RAISE Ventures
Additional investors: Wind Capital, Better Angle, Auriga Cyber Ventures, Jules Veyrat, Alexandre Andreini, Eric Fourrier, Georges Lotigier, Olivier Pantaleo, Jean-François Aliotti

The round combines institutional backing from RAISE Ventures, Wind Capital, Better Angle, and Auriga Cyber Ventures with participation from several individual investors. The presence of Auriga Cyber Ventures, a cybersecurity-focused fund, alongside the other investors, gives Fleuret AI a mix of general and sector-specific support at the pre-seed stage.

Why It Matters

Penetration testing is a resource-intensive activity that typically requires skilled human testers and scheduled engagements. Fleuret AI's approach uses AI agents to run tests continuously, which could reduce the time between vulnerability discovery and remediation.

The company's focus on web apps and APIs addresses a large and expanding attack surface. As organizations expose more functionality through APIs, continuous testing becomes more relevant to maintaining security posture.

The proof-of-compromise attachment to every finding is a notable design choice. It aims to give security teams evidence that a vulnerability is exploitable, which can help prioritize remediation and reduce false positives.

Hosting findings on Scaleway positions Fleuret AI to serve European customers with data residency considerations, a factor that can influence vendor selection in regulated industries.

What to Watch

With €4 million in pre-seed funding, Fleuret AI will look to expand its platform and customer base. Key areas to monitor include:

Growth in continuous pentest coverage across customer web apps and APIs
Adoption among European enterprises with data residency requirements
Expansion of the customer roster beyond Brevo, Stoïk, and Yogosha
Development of the Emile and Champollion agents and their capabilities

Founded in 2026 and backed by RAISE Ventures, Fleuret AI is entering the cybersecurity market with an agentic approach to a longstanding security practice.