Exein raises $270M at a $1.7bn valuation to secure physical AI

Exein, a Rome-based company that builds cybersecurity software for embedded and connected devices, raised $270 million at a $1.7 billion post-money valuation in a round led by Headline, announced on September 15, 2026. Sofina, Goldman Sachs, the EIB Group, KfW Capital and T.Capital joined, alongside existing investors including Balderton, HV, Lakestar and 33N Ventures.

Why it matters: it is one of the largest rounds so far for security aimed specifically at robots, drones and other machines running AI at the edge, a layer most physical AI companies still build in-house or skip.

What does Exein do?

Exein was founded in 2018 and is led by CEO Gianni Cuozzo. Its software runs on the device itself rather than on the network, providing embedded and runtime protection for hardware such as robots, drones, autonomous vehicles, sensors and industrial equipment. Earlier in 2026 it launched Photon, a runtime security architecture that TechCrunch describes as operating at the kernel level. Cuozzo’s summary of the approach, as quoted by TechCrunch: “every device should be able to defend itself, regardless if they are connected to a secure network or not.”

The company’s own figures: it monitors roughly 2 billion devices across aerospace, industrial automation, automotive, energy, healthcare and semiconductors, and detects about 5,000 non-repetitive attacks a week, five times the rate a year earlier. TechCrunch reports 400% year-on-year growth, with half of revenue coming from Asia Pacific. SecurityWeek puts total funding raised to date at more than $600 million.

What will Exein do with the $270 million?

Exein says the money goes to expansion in the U.S. and Asia Pacific, acquisitions in Europe and the U.S., and product. On geography, it plans a Bay Area office, has set up an APAC headquarters in Taiwan and a legal entity in Japan ahead of a Q4 2026 expansion there, and targets a South Korea office in 2027. For M&A it also has an upsized credit facility led by J.P. Morgan with KfW. On product, it is training a proprietary foundation model for physical AI security on two years of machine telemetry, expected in Q1 2027, with an agentic security architecture due by the end of 2026.

Why is physical AI security attracting this much capital?

Two pressures. The first is regulation: the EU Cyber Resilience Act, which requires manufacturers to keep connected products secure, reaches full enforcement in December 2027. The second is evidence that robots are exposed. Researchers have published root exploits for Unitree’s G1 humanoid, and DEF CON 34 robot-hacking results were turned into a free Isaac Sim test suite. A compromised machine with actuators is a safety problem, not only a data problem.

The price has moved fast. According to TechCrunch, the valuation is about 30 times the level of Exein’s Series B roughly two years ago, and more than double where it stood after an equity and debt raise in December 2025.