Hidden Level builds hardware and software for advanced RF sensing, including passive radar, drone detection, electronic warfare, and its subscription-based Airspace Monitoring Service for real-time UAS detection, tracking, and identification. Hidden Level serves defense, critical infrastructure, homeland, public safety, and research-and-development customers, as well as government and commercial teams. Its systems transform RF activity into intelligence across air, ground, sea, and space and are designed to integrate with customer systems through shared RF data layers and sensor networks. Jeffrey Cole is CEO and the company was founded in 2018. Hidden Level raised a $65 million Series C led by DFJ Growth, with participation from Revolution Growth and other investors. Its website lists a Syracuse, New York address, and SBIR records place it at 1014 N Geddes St in Syracuse.