Rhebo
The threat model is specific: OT networks running legacy protocols, PLCs that were never designed for hostile environments, and IIoT edge devices expanding the attack surface at the boundary between IT and physical processes. Rhebo, founded in 2014 and based in Leipzig, Germany, builds security tooling for exactly this terrain. The core product, Rhebo Industrial Protector , is a network-based intrusion detection system that passively monitors OT communications - no inline blocking, no disruption to live processes. It profiles normal industrial traffic, flags anomalies, and distinguishes between genuine cyberattacks, protocol violations, and technical misconfigurations. The company's technical domains span network-based intrusion detection, OT security, and IIoT security. The approach is layered: risk analysis and vulnerability assessments map the environment, the NIDS provides continuous monitoring with anomaly and intrusion detection, and managed security services offload ongoing operations. This is security for systems where availability is non-negotiable and a misstep during monitoring can mean physical consequences. Rhebo works across sectors where industrial control systems are critical infrastructure - energy providers, water and wastewater management, manufacturing, pharmaceutical and chemical production, oil and gas, and healthcare facilities. These are environments with long asset lifecycles, mixed-vendor architectures, and operational constraints that make traditional IT security approaches either insufficient or outright dangerous to deploy.
The threat model is specific: OT networks running legacy protocols, PLCs that were never designed for hostile environments, and IIoT edge devices expanding the attack surface at the boundary between IT and physical processes. Rhebo, founded in 2014 and based in Leipzig, Germany, builds security tooling for exactly this terrain. The core product, Rhebo Industrial Protector, is a network-based intrusion detection system that passively monitors OT communications - no inline blocking, no disruption to live processes. It profiles normal industrial traffic, flags anomalies, and distinguishes between genuine cyberattacks, protocol violations, and technical misconfigurations.
The company's technical domains span network-based intrusion detection, OT security, and IIoT security. The approach is layered: risk analysis and vulnerability assessments map the environment, the NIDS provides continuous monitoring with anomaly and intrusion detection, and managed security services offload ongoing operations. This is security for systems where availability is non-negotiable and a misstep during monitoring can mean physical consequences.
Rhebo works across sectors where industrial control systems are critical infrastructure - energy providers, water and wastewater management, manufacturing, pharmaceutical and chemical production, oil and gas, and healthcare facilities. These are environments with long asset lifecycles, mixed-vendor architectures, and operational constraints that make traditional IT security approaches either insufficient or outright dangerous to deploy.