List of the Top 6 On-Prem Operational Technology (OT) Security Software in 2025

Fortinet emerges as a key global player in the cybersecurity sector, notable for its comprehensive and integrated approach to safeguarding digital infrastructures, devices, and applications. Founded in 2000, the organization provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. A cornerstone of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly combines various security tools to enhance visibility, automation, and provide real-time threat intelligence across the entire network. Renowned for its dependability among businesses, government agencies, and service providers worldwide, Fortinet prioritizes innovation, scalability, and performance, thereby reinforcing its defenses against the constantly shifting landscape of cyber threats. In addition to its protective capabilities, Fortinet’s dedication to enabling digital transformation and ensuring business continuity highlights its essential role within the cybersecurity landscape, positioning itself as a trusted partner for organizations striving to navigate modern security challenges effectively. With a focus on proactive measures and cutting-edge solutions, Fortinet continues to adapt and evolve to meet the demands of an increasingly complex digital world.

Ongoing asset identification, vulnerability assessment, threat monitoring, and continuous discovery are essential for your Internet of Things (IoT) and operational technology (OT) devices. To foster innovation within IoT and OT, it is crucial to implement robust security measures across all devices in these categories. Microsoft Defender for IoT offers a solution that operates at the network level without requiring agents, allowing organizations to deploy it swiftly. This tool is compatible with a wide range of industrial machinery and can seamlessly integrate with Microsoft Sentinel and other security operations center (SOC) tools. It supports deployment in both on-premises settings and Azure-connected environments. The lightweight nature of Microsoft Defender for IoT enables it to provide device-layer security, which is particularly beneficial for new IoT and OT projects. Utilizing passive, agentless network monitoring, this solution generates a thorough inventory and detailed analysis of all IoT and OT assets without disrupting network operations. Furthermore, it can analyze various industrial protocols to extract crucial device information, such as the manufacturer, device type, firmware version, and IP or MAC address, thereby enhancing overall security visibility and management. This comprehensive approach not only safeguards devices but also strengthens organizational resilience against potential threats.

The Dragos Platform stands out as a leading solution in the field of cybersecurity for industrial control systems (ICS). It offers an all-encompassing view of your ICS/OT assets and potential threats, along with practical recommendations for proactive responses to avoid significant breaches. Crafted by seasoned professionals, this security tool equips your team with the latest resources to combat industrial threats effectively. Developed by experts actively engaged in tackling sophisticated ICS challenges, the Dragos Platform integrates various data inputs, such as communication protocols, network traffic, and asset logs, to furnish unparalleled insights into your ICS/OT landscape. By swiftly identifying malicious activities within your network, it adds valuable context to alerts, ensuring that false positives are minimized for superior threat detection. Ultimately, the Dragos Platform empowers organizations to maintain a robust security posture against evolving industrial threats.

GREYCORTEX stands out as a leading supplier of NDR (Network Detection and Response) security solutions tailored for both IT and OT (operational technology) networks. Its Mendel solution enhances security and reliability by offering comprehensive visibility into network activities, utilizing machine learning and sophisticated data analysis to identify anomalies and detect threats in their initial phases. This proactive approach not only protects systems but also helps organizations maintain operational integrity. By leveraging cutting-edge technology, GREYCORTEX empowers businesses to respond swiftly to potential security challenges.

Network Perception's NP-View represents a cutting-edge cybersecurity solution specifically designed for operational technology (OT) environments, enabling security teams to improve network visibility through automated mapping of the topology. This forward-thinking tool identifies potential access and segmentation vulnerabilities, assists in compliance initiatives, and helps to uphold a strong security framework without disrupting existing operations. As a lightweight and non-intrusive option, NP-View allows security teams to quickly identify network weaknesses and assess risks effectively. It removes the need for agent installations or alterations to the OT infrastructure, making it user-friendly for both technical experts and those with less technical expertise. Compatible with a wide range of firewalls, routers, and switches commonly found in OT environments, NP-View functions flawlessly in offline mode, ensuring that an internet connection is not a requirement. The platform provides continuously refreshed, detailed network maps, offering an accurate and current overview for evaluating the cybersecurity landscape. With its unique capabilities, NP-View has become an essential resource for organizations dedicated to strengthening their OT networks against emerging threats, while also fostering a culture of security awareness among all staff members.

Frenos emerges as the first-of-its-kind autonomous platform dedicated to the assessment of Operational Technology (OT) security, designed to proactively analyze, prioritize, and safeguard critical infrastructure while ensuring that operational activities remain uninterrupted. This innovative solution is specifically crafted for OT settings, enabling autonomous risk assessment and mitigation across all sixteen critical infrastructure sectors. Utilizing a digital twin of the network in conjunction with an AI-driven reasoning engine, it scrutinizes various adversarial tactics, techniques, and procedures, offering contextual and prioritized remediation strategies tailored for OT environments. Such a sophisticated approach allows organizations to significantly reduce risks and enhance their overall security posture. Moreover, Frenos has developed strategic partnerships with leading industry entities such as Claroty, Forescout, NVIDIA, Dragos, Palo Alto Networks, Tenable, and Rapid7. Established with the goal of helping businesses safeguard their invaluable assets—spanning oil rigs, medical devices, electric substations, and financial systems—Frenos is transforming the realm of OT security. As the threat landscape continuously evolves, this platform remains agile, ensuring organizations are equipped to stay ahead of emerging vulnerabilities, thereby reinforcing their resilience against potential cyber threats. Ultimately, Frenos not only enhances security but also promotes confidence in technological operations across various industries.