Paris-based Filigran, which develops open-source threat intelligence platform OpenCTI used by the EU, the FBI, and more, raised a $35M Series B led by Insight
Romain Dillet / TechCrunch :
Context & Ripple Effects
Filigran sits at the intersection of open-source cybersecurity software and institutional threat-intelligence use: OpenCTI is identified as serving the EU, the FBI and other organizations. The round brings Insight into a company whose product has public-sector as well as commercial relevance.
The financing was an early step in a continuing scale-up: Filigran later reported more than 6,000 users alongside a $58M Series C. It also lands within a broader French security-software funding backdrop that included Tehtris's €20M XDR round.
First-order effects
- Filigran adds $35M of financing and Insight as its Series B lead, strengthening the company's ability to support and develop OpenCTI.
- OpenCTI's existing position with major public institutions gives the funding added strategic weight beyond a purely enterprise-software deployment.
Second-order effects
- The round validates investor appetite for threat-intelligence platforms built around open-source software, increasing the benchmark for adjacent security vendors seeking growth capital.
- Security providers spanning exposure management and staff-risk training, including the later-funded threat-exposure specialist Flare, face a market in which buyers can pair their tools with a dedicated intelligence layer.
Third-order effects
- If institutional adoption and community use continue to reinforce each other, open-source threat-intelligence platforms could become shared infrastructure in security operations rather than niche point products.
- That would favor vendors able to convert broadly accessible intelligence software into dependable deployments for regulated and public-sector customers, though this round alone does not establish that outcome.
The trend: This is one data point in the commercialization of open-source, dual-use threat-intelligence infrastructure for enterprise and government security teams.