IoT/OT Network Security

The Convergence Challenge: Protecting the Physical World

The integration of smart sensors, Industrial Control Systems (ICS), and Operational Technology (OT) with corporate IT networks has created the Industrial Internet of Things (IIoT). While this convergence drives massive efficiency, it exposes once-isolated physical operations (like manufacturing floors and utility grids) to global cyber threats. Since these systems prioritize uptime and often run on legacy platforms, applying standard IT security is impossible and risky.

Subex Secure specializes in securing the OT and IoT perimeter, ensuring the safety, reliability, and continuous operation of your critical infrastructure assets.

Tailored Security for Non-Traditional Assets

Our solutions are designed specifically for the constraints and proprietary protocols of industrial and medical environments. We do not use traditional, IT-centric methods that risk interrupting production.

Core Pillars of Our Security Framework:

• 100% Agentless Visibility: We use passive, non-intrusive monitoring to achieve complete visibility across your OT and IoT networks without installing agents that could destabilize sensitive equipment. We discover every PLC, sensor, and HMI.
• Zero Trust Micro-Segmentation: We enforce strict isolation between business IT and operational networks, and further segment critical OT zones. This prevents lateral movement: if an office device is compromised, the threat cannot reach the industrial controllers.
• Protocol-Aware Anomaly Detection: Our predictive analytics engine is trained on industrial protocols (like Modbus and DNP3). It establishes a behavioral baseline and flags anomalies—such as an unauthorized command or unusual traffic volume—that signal a targeted OT attack.

Achieving Operational Continuity and Digital Trust

Protecting the IoT/OT network is about guaranteeing business continuity and mitigating risks that carry real-world physical consequences.

• Vulnerability Management for Legacy Assets: For unpatchable or legacy systems, we deploy virtual patching and network controls to mitigate known vulnerabilities externally, protecting the asset without requiring production downtime.
• Secure Remote Access: We eliminate the risk of broad access tools like VPNs by implementing Zero Trust Network Access (ZTNA) for third-party vendors and remote engineers, granting them strictly limited, Just-In-Time access to only the specific device they need.
• Compliance and Safety: Our solution helps align your security controls with critical industrial standards (like IEC 62443) and health regulations, proving to regulators and customers that safety and data integrity are never compromised.

Ready to secure the physical assets that run your business?