Filigran Lands $35M to Boost Cybersecurity Threat Management Suite

Paris-based cybersecurity startup Filigran is rapidly gaining recognition as a major player in the global cybersecurity market, having secured a $35 million Series B funding round, just a few months after raising $16 million in Series A. Led by Insight Partners, with returning backers Accel and Moonfire, this latest round of funding marks a significant milestone for Filigran, enabling it to accelerate both product development and international expansion. Filigran’s flagship offering, OpenCTI, is an open-source threat intelligence platform that provides companies and public sector organizations with a comprehensive, unified system for managing threat data. OpenCTI allows users to import threat intelligence from diverse sources and enhances this data with insights from top security providers such as CrowdStrike, SentinelOne, and Sekoia.

OpenCTI’s robust, open-source model has made it immensely popular among cybersecurity professionals, with over 4,300 experts contributing to the platform and millions of downloads worldwide. Government entities like the European Commission, the FBI, and New York City Cyber Command rely on OpenCTI to keep their operations secure and proactive against threats. To meet the needs of enterprise clients, Filigran also offers a paid enterprise edition that includes a software-as-a-service (SaaS) option as well as an on-premises deployment model. This enterprise solution has been embraced by major organizations, including Airbus, Marriott, Thales, Hermès, Rivian, and Bouygues Telecom, which use OpenCTI to power their threat management infrastructure.

With the success of OpenCTI, Filigran has expanded its vision to create a full cybersecurity suite known as the eXtended Threat Management (XTM) suite. This includes additional products like OpenBAS, a breach and attack simulation (BAS) platform that complements OpenCTI by helping users identify vulnerabilities and assess their defenses. While OpenCTI and OpenBAS function as standalone products, their combined usage enables clients to better understand potential threats and develop robust security strategies. Filigran is capitalizing on OpenCTI’s popularity to drive adoption of OpenBAS and further plans to introduce a third product to round out the XTM suite by 2026. The aim is to deliver a comprehensive, end-to-end cybersecurity solution that addresses the intricate challenges facing modern organizations.

Filigran’s ambitious approach also includes building a strong community of cybersecurity professionals. Inspired by collaborative platforms like GitHub and Hugging Face, Filigran is working to launch XTM Hub by year’s end. The XTM Hub is designed to be a collaborative space where users can access resources, share threat intelligence practices, and connect with other professionals in the Filigran ecosystem. By creating this community-driven hub, Filigran hopes to strengthen the cybersecurity community and drive continuous improvement in threat management practices.

With this new funding, Filigran is not only enhancing its product suite but also expanding its international footprint. Currently, the company has a presence in France, the United States, and Australia. However, the demand for its solutions is growing worldwide, and Filigran plans to establish operations in Germany, Japan, and Singapore. This expansion aligns with Filigran’s mission to address the increasing complexity of cybersecurity threats in a global context. By offering a well-rounded suite of tools and fostering a collaborative ecosystem, Filigran is positioning itself as a leader in the cybersecurity space, committed to providing innovative, data-driven solutions for organizations worldwide.