France-based Filigran has raised Series C funding to support its cybersecurity products, AI initiatives, global expansion, and community programs.

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Filigran, a Paris-based company transforming cyber threat management, has closed its fourth funding round on its third anniversary, raising $58M (nearly €49.73M) in Series C. 

The round was led by Eurazeo, with participation from Deutsche Telekom (T.Capital), Accel, and Insight Partners.

“Our mission remains the same: to help security teams and the communities around them stay ahead of threats in a fast-changing world. Along the way, three priorities have consistently guided us: delivering innovative products, expanding our global reach, and nurturing the community that drives everything we do,” mentions Filigran in a statement.

“This fundraising allows us to ramp up on those priorities. It gives us the resources to accelerate the products we’ve already begun, expand into new regions where we’re needed most, and deepen our investment in the people and communities that shape our work.”

Providing open-source cybersecurity solutions

Founded in 2022 by Samuel Hassine and Julien Richard, Filigran provides cybersecurity solutions covering threat intelligence management, breach and attack simulation, and cyber risk management. 

It focuses on three priorities: advancing its products, expanding globally, and supporting its community.

Filigran’s open-source “eXtended Threat Management” (XTM) suite helps organisations understand threat environments, anticipate and detect incidents, and conduct attack simulations. 

The suite consists of two main solutions:

  • OpenCTI – A cyber threat intelligence platform that allows organisations to manage and operationalise their cyber threat intelligence knowledge and observables.
  • OpenBAS – A breach and attack simulation platform that allows organisations to create attack simulations, stress tests, and crisis management exercises.

Filigran engages with its community and encourages organisations to adopt an open approach to cybersecurity strategy and operations. The company supports collaboration and knowledge sharing to improve threat management across organisations.

Since its inception, the company has contributed to the protection of thousands of organisations. Filigran started three years ago with a small team and has now grown to nearly 200 team members, created products used by thousands, and built a community of over 6,000 members. The company has completed three funding rounds, the last one a year ago.

Capital utilisation

Building the third product: OpenGRC

The funding will support the company’s initiatives to expand its eXtended Threat Management (XTM) Suite, develop new platforms, grow its team internationally, and strengthen its community.

Part of the expansion includes building Filigran’s third product, OpenGRC, an open-source platform for Threat-Informed Cyber Risk Management. 

OpenGRC will transform traditional compliance practices into dynamic metrics and alerts, allowing CISOs and risk managers to improve risk assessment processes, reporting, and investment decision-making. 

Risk quantification will be tailored to each organisation’s threat profile and capabilities, enabling security leaders to make data-driven decisions and integrate compliance into strategic planning.

Introducing XTM One

The funding will also support XTM One, an AI-native Threat Informed Defence Cockpit. XTM One will connect all products in the XTM Suite and provide role-based AI Agents, such as threat intelligence analysts and SOC analysts. These agents will run autonomous workflows, correlate cross-product data, and produce actionable insights. 

Security practitioners will be able to focus on high-value tasks while AI Agents handle repetitive work, translating intelligence into actionable measures. According to a statement, Filigran positions AI as an assistant for practitioners rather than a replacement, enabling organisations to use advanced security tools efficiently and execute complex workflows.

From local to global presence

To support its initiatives, Filigran is growing its engineering and research teams to accelerate product development and explore emerging cybersecurity challenges. It is also expanding its global presence. 

In Saudi Arabia and Japan, new subsidiaries will be launched. In the United States, the team will triple in size to serve a key user base. In Germany and the broader DACH region, the company will expand operations to support organisations across Europe. 

This expansion will make XTM capabilities accessible worldwide while maintaining local support and collaboration.

Strengthening its community

“Our community has always been our greatest asset, and it’s growing faster than ever,” says the company. The community has grown to over 6,000 members in three years. 

Filigran launched an Ambassador Program to support practitioners in local regions and connect the open-source ecosystem with the wider cybersecurity community. With new funding, the company plans to host more events, support ambassadors and community initiatives, and integrate adjacent communities to increase collaboration. 

“As we grow, our commitment remains the same: to keep the community at the core of our work and ensure that every product we build reflects the real-world needs of the people who use them.”