Filigran’s main product is OpenCTI, an open-source threat intelligence platform that lets companies or public sector organizations import threat data from multiple sources, and enrich that data set with intel from providers such as CrowdStrike, SentinelOne or Sekoia.

The open-source version of OpenCTI has attracted contributions from 4,300 cybersecurity professionals and been downloaded millions of times. The European Commission, the FBI and the New York City Cyber Command all use OpenCTI. The company also offers an enterprise edition that can be used as a software-as-a-service product or hosted on premises, and its clients include Airbus, Marriott, Thales, Hermès, Rivian and Bouygues Telecom.