Rome's Exein Raises $270M at $1.7B to Build Embedded Cybersecurity for Physical AI

Italian embedded-security firm Exein raised $270M led by Headline at a $1.7B post-money valuation, with Sofina, Goldman Sachs, EIB Group ETCI and KfW Capital co-investing. Its kernel-level Photon runtime already ships in over 2 billion chips at customers including Nvidia, Arm, Mediatek and AWS; first-half 2026 ARR grew four-fold. Exein plans an agentic security architecture by end of 2026 and a foundation model for tracking and securing physical AI systems in early 2027.