The OT Purdue Model: A Framework for Securing Operational Technology

Operational Technology (OT) systems, including control systems, SCADA systems, and process control networks, are essential to the operations of many critical infrastructure industries. However, as these systems become more connected, they are becoming increasingly vulnerable to cyber threats that can compromise sensitive information, disrupt operations, and pose a threat to public safety.

To address these risks, the OT Purdue Model was developed as a framework for securing operational technology. This model provides a structured approach to securing OT systems and helps organizations to identify and mitigate the risks associated with these systems.

Key Components of the OT Purdue Model

1. Security Zones and Conduits: The OT Purdue Model defines different security zones within an OT system, based on the criticality of the assets within each zone. Security zones are connected by conduits, which are controlled access points between zones.
2. Security Perimeter: The security perimeter defines the boundary between the secure and non-secure parts of an OT system. This perimeter is designed to prevent unauthorized access to the system and to prevent the exfiltration of sensitive information.
3. Security Policies and Procedures: The OT Purdue Model defines a set of security policies and procedures that must be implemented to ensure the security of an OT system. These policies and procedures cover areas such as access control, incident response, and device management.
4. Security Architecture: The security architecture of an OT system should be designed to meet the security requirements defined by the OT Purdue Model. This includes the design of the security perimeter, the placement of security devices, and the management of security zones and conduits.
5. Monitoring and Detection: Monitoring and detecting cyber threats in real-time is critical to the security of an OT system. The OT Purdue Model defines a set of monitoring and detection requirements that must be implemented to ensure the timely detection of cyber threats.
6. Incident Response: The OT Purdue Model defines a set of incident response requirements that must be in place to ensure that cyber incidents are handled effectively, minimizing the damage and minimizing the risk of future incidents.

By following the OT Purdue Model, organizations can ensure that their OT systems are secure and that they have the necessary controls in place to detect and respond to cyber threats. This model provides a structured approach to securing critical infrastructure and helps organizations to identify and mitigate the risks associated with these systems.

Invest in the security of your critical infrastructure by implementing the OT Purdue Model. Contact us to learn more about our OT security services and how we can help you secure your operational technology systems.