OneLayer

OneLayer secures private cellular networks — private LTE and 5G deployments used in manufacturing plants, utilities, mining operations, and hospitals — by giving IT and security teams visibility into every device connected to the network and applying zero-trust, context-based segmentation policies across both IT and OT devices. Private 5G is a relatively new attack surface: it sits outside traditional Wi-Fi and wired network security tooling, and OT devices connected over it often can’t run conventional endpoint agents, which is the specific gap OneLayer’s platform targets.

The company came out of stealth in 2023 with an $8.2 million seed round, then raised a $28 million Series A in late 2025 led by Maor Investments with participation from Chevron Technology Ventures and Koch Disruptive Technologies — both strategic investors from asset-heavy industrial sectors that are also private 5G customers, a meaningful signal of real operational demand rather than purely speculative interest. Headquartered in Tel Aviv, Israel, OneLayer has raised more than $43 million to date and counts roughly 30 private network deployments as customers, including named engagements with Koch Industries and two of Israel’s leading hospitals.

Private 5G/LTE security is a narrow but growing niche as more industrial operators deploy dedicated cellular networks instead of Wi-Fi for OT connectivity. OneLayer’s strategic-investor customer base (Chevron, Koch) is a genuine differentiator, though the company remains early-stage with a small deployment base relative to the broader OT/IoT security market, and independent third-party technical validation of its segmentation and detection capabilities has not been published.