EmberOT vs Tenable One OT Exposure

EmberOT is self-hosted software for monitoring industrial assets and networks. Its software sensors discover, classify, and track assets from remote network edges through core networks, while collecting and processing data locally. The product combines cybersecurity alerts with operational anomaly detection and process monitoring. It evaluates vulnerabilities using current and historical information to rank environment-specific risk and recommend remediation. The Odyssey console brings together sensor and license management, health monitoring, asset inventory, and network views. Listed protocols include IEC 61850, Siemens S7, CIP/ENIP, BACnet, Modbus, DNP3, and MQTT; SIEM integration is supported. Minimum sensor requirements are 4 cores, 4 GB RAM, and 30 GB storage. EmberOT also offers a free OT PCAP Analyzer for offline packet-capture review, including device and protocol identification, filtering, and search. The analyzer requires a valid school or business email for download, and does not provide live span or tap monitoring, outbound sending, historical storage, or threat and anomaly detection. Main-product pricing is on request.

Tenable One OT Exposure is web-based software for operational technology security. It provides passive monitoring and OT asset discovery, giving organizations visibility into network activity and connected OT assets. Supported protocols are Modbus, Modbus UMAS, Modbus MODICON, CIP, PROFINET, DNP3, IEC 60870-5-104, MMS, S7/S7+, and IEC 61850. The product also supports SIEM integration for connecting OT observations with security-information workflows. Tenable lists two purchasing routes: a standalone subscription and a perpetual license with maintenance. Both require one license for each detected IP address, while prices are available on request. The software is available through the web. Tenable was founded in 2002 and is headquartered in Columbia, Maryland, United States. The central operating model is passive observation rather than active scanning, paired with discovery of OT devices and protocol-aware visibility. Organizations considering it need to account for licensing tied to detected IP addresses when estimating deployment scope and discussing either the subscription or perpetual-maintenance option with Tenable.