The Purdue Model in Industrial Cybersecurity is an adaptation of the traditional Purdue Network Model, designed to protect industrial networks from cyber threats. It provides a structured framework that segments industrial control systems (ICS) into distinct security zones, reducing the risk of cyber intrusions and ensuring secure communication between IT and OT environments.
The model consists of multiple layers, from physical devices (Level 0) and controllers (Level 1) to enterprise systems (Level 4). Each layer is protected by network segmentation, firewalls, and intrusion detection systems (IDS) to prevent unauthorized access and cyberattacks. The segmentation ensures that if one layer is compromised, the threat is contained and does not spread to critical infrastructure.
As cyber threats evolve, the Purdue Model is being adapted to modern industrial cybersecurity needs, including cloud integration, Zero Trust security, and endpoint protection. Organizations are implementing security controls such as multi-factor authentication (MFA), industrial anomaly detection, and secure remote access to further enhance cybersecurity in OT environments. By following the Purdue Model’s principles, industries can create a more resilient defense against cyber risks while maintaining operational efficiency.