Cybertech completes Series C funding round with Eurazeo, Accel, Insight Partners and Deutsche Telekom (T.Capital) one year after its Series B round.
Paris, France, October 6, 2025 – Cybertech company Filigran announces that it has completed a Series C funding round worth $58 million, bringing its total fundraising to over $100 million in just three years of existence. This fundraising was led by Eurazeo’s Growth team, part of the leading European investment group Eurazeo, with the support of Deutsche Telekom (T.Capital) and its long-standing investors Accel and Insight Partners. One year after the previous round, which raised $35 million, this new fundraising demonstrates strong customer demand for Filigran’s solutions across the world, leading to strong revenue growth.
This financing aims to support and accelerate Filigran’s growth and expansion into new regions such as the Pacific and the Middle East, with planned expansions into Japan and Saudi Arabia. Filigran will also strengthen its presence, expanding US and European markets, with plans to onboard new talent from France and Germany to support its growth and strengthen its collaboration with the open-source community, which has doubled in two years.
This new round of financing also supports the development of OpenGRC, a third module for Filigran’s platform, that will complement the eXtended Threat Management suite and enable organizations to prioritize their cyber risks and take the most effective actions first. Filigran will accelerate its integration of AI with the creation of an AI Agent platform, XTM One, and strengthen its R&D teams at OpenCTI and OpenBAS to drive the continued development of these long-standing solutions.
“This Series C round is an important milestone in Filigran’s journey. We are extremely proud of the collective commitment that brought us here, with one clear mission: enabling organizations everywhere to be more proactive against threats and to leverage intelligence at every level of their security strategy,” said Samuel Hassine, CEO of Filigran. “It reflects everyone’s commitment to achieving our mission, which is to make threat intelligence accessible and actionable for all organizations worldwide.”.
“We’re thrilled to back Filigran as it enables leading organizations worldwide to take a proactive approach to cyber defense. With AI accelerating both the scale and sophistication of cyberattacks, companies need solutions that can turn vast amounts of threat intelligence into actionable insights to prevent future incidents. Filigran’s best-in-class platform delivers exactly that. We’re also excited about the powerful AI capabilities on the horizon, which will further solidify Filigran’s position as the category-defining platform for threat intelligence,”said Raluca Ragab, Partner and Alexandra Pederzani, Director at Eurazeo Growth.
“The progress Sam, Julien, and the Filigran team have made since we led their Series A last year has been remarkable,” said Andrei Brasoveanu, Partner at Accel. “Today, more than 6,000 public and private sector organizations around the world rely on Filigran’s OpenCTI platform to proactively defend against cyber threats. Coupled with a passionate and fast-growing open-source community, Filigran is clearly redefining and democratizing access to threat management.”
Founded by Samuel Hassine and Julien Richard in 2022, Filigran seeks to revolutionize proactive cyber threat anticipation with its XTM suite. The XTM suite integrates platforms such as OpenCTI, which helps structure and operationalize global threat intelligence, and OpenBAS, an adversary emulation and security validation solution that leverages real-time threat data to identify security gaps. Together, these solutions provide a unified view of potential risks, enabling organizations to strengthen their cybersecurity posture.
“Filigran’s expansion across Europe, combined with Deutsche Telekom’s customer base, creates a unique opportunity: delivering advanced cyber defense to organizations of all sizes. Together, we are setting a new benchmark for actionable threat intelligence and resilience.” said Thomas Tschersich, CSO at Deutsche Telekom AG.
Filigran’s threat intelligence solutions are used by a growing number of international companies, including Bouygues Telecom. Filigran’s users also include public sector organizations such as numerous US and Australian federal agencies, and a number of European institutions.
About Filigran
Filigran, founded in October 2022, stands out in the cybertech ecosystem for its commitment to revolutionizing threat intelligence and its use within cybersecurity teams. Its mission is to develop innovative open source solutions specifically designed to meet the complex challenges organizations face in anticipating cyber risks and threats. Filigran solutions are used by more than 6,000 public and private organizations worldwide.
For more information: Website – Blog – LinkedIn – X/Twitter
Media Contact Filigran – Rumeur Publique
Cédric Buisson | + 33 (0)6 60 92 19 76
Sophie Braquenié | +33 (0)6 72 16 68 29
filigran@rumeurpublique.fr
About Eurazeo
Eurazeo is a leading European investment group with €36.8 billion in diversified assets under management, including €27,5 billion on behalf of institutional and retail clients through its private equity, private debt, real estate and infrastructure strategies. The Group supports more than 600 mid-market companies, leveraging the commitment of its 400-strong workforce, its in-depth sector expertise, its privileged access to global markets through 13 offices across Europe, Asia and the United States, and its responsible approach to value creation based on growth. The company’s institutional and family shareholding structure, and its solid financial structure, ensure its long-term viability.
Eurazeo has offices in Paris, New York, London, Frankfurt, Berlin, Milan, Madrid, Luxembourg, Shanghai, Seoul, Singapore, Tokyo and São Paulo.
Eurazeo is listed on Euronext Paris.
Press contact Eurazeo
France – HAVAS: Mael Evin | + 33 (0)6 44 12 14 91 | mael.evin@havas.com
UK – H/ADVISORS MAITLAND: David Sturken | +44 (0) 7990 595 913 | david.sturken@h-advisors.global
About T.Capital
T.Capital manages €2.3 billion in assets on behalf of Deutsche Telekom across Venture and Growth Capital. The VC team invests €1–15 million tickets in Series A to C rounds across the US, Europe, and Israel, focusing on themes such as AI, cybersecurity, connectivity or consumer.
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