Overview

Phosphorus Cybersecurity is the leading innovator in proactive Cyber-Physical System (CPS) protection, delivering the industry’s first and only Unified xIoT Security Management Platform for discovery and remediation. Purpose-built to address the rapidly growing risks posed by IoT, OT, IoMT, and IIoT devices—collectively referred to as the extended Internet of Things (xIoT)—Phosphorus sets a new standard for proactive, prevention-based security.

xIoT devices now constitute over 30% of the enterprise attack surface but remain a blind spot for most organizations. Unlike legacy passive solutions that rely on network traffic analysis, Phosphorus uses its patented Intelligent Active Discovery engine to deliver the most accurate, safe, and rapid discovery of all xIoT devices. This agentless, software-based solution identifies and classifies assets across more than 950 vendors and 1 million device models, providing unparalleled visibility and enabling rapid action.

Phosphorus goes beyond discovery and monitoring, delivering automated at-scale remediation to tackle fundamental security hygiene issues: rotating default credentials, hardening insecure configurations, and patching outdated firmware. These capabilities allow organizations to dramatically reduce risk across their xIoT attack surface while ensuring compliance with federal and industry standards.

Founded in 2017 by Chris Rouland, Rebecca Rouland, and Earle Ady, previously of Bastille, Endgame, and other successful Internet companies, Phosphorus is a trusted partner of Fortune 500s, Global 2000, and government agencies. Phosphorus is a privately held company headquartered in Nashville, TN.