Filigran, a cybersecurity startup based in Paris, has raised $35 million in a Series B funding round, led by Insight Partners and supported by previous investors Accel and Moonfire. This follows a $16 million Series A funding round completed only months prior. Filigran’s flagship product, OpenCTI, an open-source threat intelligence platform, has quickly gained traction among major organizations, including the European Commission, the FBI, and the New York City Cyber Command. OpenCTI enables users, ranging from corporate clients to public sector bodies, to import and enhance threat intelligence from various providers like CrowdStrike, SentinelOne, and Sekoia.
The open-source edition of OpenCTI has been widely embraced, with millions of downloads and contributions from 4,300 cybersecurity professionals. Filigran also provides an enterprise version available as a SaaS solution or on-premises. Its customer base includes high-profile clients like Airbus, Marriott, Thales, Hermès, Rivian, and Bouygues Telecom. Building on OpenCTI’s success, Filigran has developed a broader cybersecurity suite, dubbed the eXtended Threat Management (XTM) suite, which includes OpenBAS, a breach and attack simulation platform. Although OpenCTI and OpenBAS can function independently, using them together gives a more comprehensive risk overview.
Filigran’s rapid growth strategy leverages the popularity of OpenCTI, with plans underway to introduce a third cybersecurity product. Co-founder and CEO Samuel Hassine shared the company’s target to offer an end-to-end threat management suite by 2026, aimed at addressing complex cybersecurity challenges faced by modern organizations.
Drawing inspiration from GitHub and Hugging Face, Filigran aims to launch the XTM Hub, a collaborative platform for cybersecurity professionals, by year-end. This hub will serve as a resource center, allowing users to exchange tradecraft, connect with the community, and access specialized content within the Filigran ecosystem.
The Series B funding will support Filigran’s product development efforts and international expansion. Already present in France, the U.S., and Australia, the company plans to broaden its footprint to Germany, Japan, and Singapore.
Featured image courtesy of Journal of AHIMA
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