Topic

network security

All articles on network security.

Cybersecurity

OT Network Segmentation: from the Purdue Model to IEC 62443 Zones in Production

Network segmentation is the OT security control with the best cost/effectiveness ratio. From the Purdue model to IEC 62443 zones, how to implement it in production without stopping the plant.

4 min read

Secure remote access in OT environments: attack vectors and defensive controls

Cybersecurity

Secure remote access in OT environments: the most underestimated attack vector

Remote access to OT environments exploded after the pandemic, but security practices never caught up. Here is why it became the attackers' favorite entry vector.

4 min read

Zero Trust architectural diagram applied to an industrial OT network

Cybersecurity

Zero Trust in OT: Applicable Principles and Real Limits in Industrial Environments

Zero Trust is the security framework of the moment, but applying it to OT environments requires pragmatism: here is what actually works and where the model shows its limits.

4 min read