Cybersecurity software company Filigran announced a $35 million Series B on October 28, 2024. Insight Partners led the round, while existing investors Accel and Moonfire continued their backing. Filigran said it planned to use the funding for international expansion and product innovation, including work involving AI and data engineering.
Who invested in Filigran’s $35 million Series B?
Insight Partners led the financing, with Accel and Moonfire participating as continuing investors, according to Filigran’s October 28, 2024 announcement. The company said the round followed a $16 million Series A earlier that year.
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Insight Principal Crissy Costa Behrens praised Filigran’s open-source suite in the announcement; that assessment reflects the investor’s stated rationale, rather than an independent evaluation of the products.
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What does Filigran make?
Filigran, founded in 2022 by Samuel Hassine and Julien Richard, develops cybersecurity software. Its two flagship products at the time of the funding announcement were OpenCTI and OpenBAS, which the company presented together as its eXtended Threat Management (XTM) suite.
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| Product | Role described by Filigran and contemporaneous coverage |
|---|---|
| OpenCTI | Structures and operationalizes threat intelligence. TechCrunch reported that organizations could import threat data from multiple sources and enrich it with provider intelligence. |
| OpenBAS | Supports adversary emulation and security validation using real-time threat data to identify security gaps; TechCrunch described it as a breach and attack simulation platform. |
| XTM suite | Filigran’s umbrella for OpenCTI and OpenBAS, intended to help organizations understand threat environments, anticipate and detect incidents, reduce response time, and test critical infrastructure. These are company-described aims, not independently measured outcomes. |
Read TechCrunch’s October 27, 2024 coverage for contemporaneous reporting on the products and funding.
How did Filigran say it would use the funding?
The company named international expansion—particularly in the United States and Pacific region—and product innovation as priorities. It specifically pointed to AI and data engineering use cases. Those were plans announced in 2024; the funding release does not establish which expansion or product goals were later achieved.
Filigran CEO and co-founder Samuel Hassine said, “Our mission is to make threat intelligence accessible and actionable for all organizations.” This describes the company’s stated mission, not a measured result of the financing.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsWhat do the announcement’s scale figures mean?
Filigran’s October 2024 release said its open-source community included more than 4,300 cybersecurity professionals and active contributors, and its “About Filigran” section cited more than 6,000 public and private organizations worldwide. These are company-reported figures from that announcement, not independently audited current metrics or a current customer count. TechCrunch separately reported that OpenCTI had been downloaded millions of times and cited 4,300 cybersecurity-professional contributions.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is the Series B still Filigran’s latest funding round?
No. Filigran’s newsroom now lists Series C coverage, so the $35 million Series B is a historical funding event, not the company’s latest round. The newsroom listing alone does not establish the Series C’s amount, date, or terms.
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