Adnexus is a Paris-based venture capital firm and investment fund of Groupe ADSN, created in 2023. It backs startups in France and Europe from pre-seed and seed through Series A, with a thesis around trust tech, digital identity, cybersecurity, compliance, privacy and sovereign data management. The firm is relevant for founders building software, data and infrastructure solutions for regulated sectors such as legal and real estate, and has also invested in deep tech and biotechnology-adjacent data storage.