Tenna Systems closes $13.5M seed to tackle electromagnetic threats
Tenna Systems, a defence-focused spacetech startup, has raised $13.5 million in an oversubscribed seed round to accelerate software-driven “spectrum resilience” for military and commercial operators facing jamming, spoofing and signal interference.
The round was led by Costanoa, with participation from Viola Ventures, Fresh Fund, 202 Ventures and existing backers. The company said it plans to more than double headcount over the next year while expanding further in the US and scaling deployments internationally.
Turning platforms into sensors
Modern operations increasingly depend on reliable wireless links, yet the electromagnetic environment has become more complex as unmanned systems, satellite networks and dense signal traffic proliferate. Tenna Systems says its approach avoids adding expensive bespoke hardware by using software to transform existing aircraft, drones, satellites, ships and mobile devices into a distributed sensor network.
By stitching these data sources together, the platform produces a live spectrum map designed to identify interference and locate its source—often within 50 to 200 metres—to support faster mitigation and decision-making.
Founded by electronic warfare veterans
Tenna Systems was founded in 2023 by twin brothers Avner Bendheim and Gabriel Bendheim, who previously worked on SIGINT and electronic warfare programmes. The company said it is executing a growing slate of defence and commercial contracts and partnerships, including work tied to the US Army, US Air Force and the Israel Ministry of Defence.
Product suite: monitoring, geolocation and resilience
The company’s tools include Arena for real-time monitoring, Tracer for locating interference sources, and Halo for embedded connectivity “armour” intended to help systems maintain communications under attack.
“Much like AccuWeather but for electronic warfare, our software transforms the blizzard of sensor data into a real-time map of Radio Frequency (RF) domains,” said Avner Bendheim, co-founder and CEO of Tenna Systems. Costanoa founder and managing partner Greg Sands said the firm believes the platform could “transform how defence partners secure wireless systems” across domains.
Related
