Exein secures $270m in new funding
Exein, a cybersecurity company specialising in protecting AI‑enabled physical systems, has raised $270 million in fresh capital, valuing the business at $1.7 billion. The round makes Exein the highest‑valued cybersecurity startup in Europe and will support expansion across the United States and Asia-Pacific as demand grows for security tools built for autonomous machines.
The investment was led by Headline, with Sofina, Goldman Sachs, the European Investment Bank Group through ETCI, KfW Capital and T.Capital joining the round. Existing backers including Balderton, HV, Intrepid Growth Partners, 33N Ventures, Lakestar, Supernova Invest, Blue Cloud Ventures and Geodesic Capital also participated. The round was heavily oversubscribed. Alongside the equity raise, Exein has increased its revolving credit facility with J.P. Morgan, with KfW joining as an additional lender.
Exein’s valuation has climbed thirty-fold in two years, driven by rapid commercial growth. The company reported a fourfold increase in ARR in the first half of 2026.
Founded to secure intelligent machines that perceive and act in the physical world, Exein has spent years developing technology for embedded and runtime security. Earlier this year it launched Photon, a kernel-level runtime architecture designed to block malicious execution before an attack can run, a capability aimed at autonomous systems where responses must occur at machine speed.
The company is now building a proprietary foundation model trained on machine telemetry collected from more than two billion devices running Exein’s technology. Unlike general-purpose AI models trained on human-generated data, Exein’s model is designed to learn how machines behave in real environments. The company plans to introduce autonomous security agents powered by this model by late 2026, with the first foundation models expected in early 2027.
Exein says the shift to Physical AI is reshaping the threat landscape, with AI enabling attacks that previously required specialist human expertise. The company is now detecting around 5,000 new non‑repetitive attacks each week — five times the level seen a year ago.
Around half of Exein’s revenue already comes from Asia-Pacific, and the company operates across Europe, APAC and the US. The new funding will support further expansion in robotics, autonomous systems and Physical AI markets, including increased US hiring and a planned Bay Area office.
Exein also intends to pursue acquisitions as it broadens its technology platform. Since its last round in December 2025, the company has opened its APAC headquarters in Taiwan and secured new partnerships across semiconductors, industrial computing and connected infrastructure.
Founder and CEO Gianni Cuozzo said the company is positioned for the shift as AI moves “out of the cloud and into the physical world.”
“Frontier models are pushing the patch window to zero. Attacks now happen at machine speed, so defence has to as well,” he said.
Headline partner Clarey Zhu said securing intelligent machines will become one of the defining cybersecurity challenges of the next decade. She highlighted Exein’s embedded systems expertise and machine‑data advantage as key differentiators as the company scales globally.
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