Drone Pilots Think They're Invisible. They're Not.

How did a box that only listens turn a small Finnish startup into a company valued at about 1.3 billion euros at its IPO price? In 2016 a Finnish software entrepreneur started building a box that finds drones and the people flying them, without sending out a single signal of its own. For years it stayed a niche product. Then the war in Ukraine changed the market. In 2025 the company, Sensofusion, had revenue of 35.1 million euros, and at its IPO price it is valued at about 1.3 billion euros. This is the story of the box, the bet behind it, and what happens when a drone pilot can no longer hide. Not affiliated with or endorsed by Sensofusion. Chapters 0:00 He thinks he's hidden 0:58 The radio developer 3:02 Not yet 5:12 The world changes 9:55 Thirteen people 12:30 What the box really sells 15:32 The price of a bet 19:59 Still listening