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The Production vs Security Myth | OT Security

Security researchers examine technical aspects of The Production vs Security Myth | OT Security.

Summary

The Cultural Divide

Fortinet’s Nate Dan interviews OT specialist Fabio Piam about the persistent belief that plant security and production uptime cannot coexist. Fabio says the myth comes from past IT-led projects that disrupted operations and left lasting scars with operators who measure success in availability.

Different Security Priorities

OT teams prioritize availability of cyber-physical systems, while IT emphasizes confidentiality and integrity of data. Cyber initiatives must be co-designed with plant stakeholders or they are treated as operational risk rather than protection.

Flat Networks and Risk

Fabio warns that flat OT networks let one compromised device reach every process. Mixed brownfield assets—old, unpatched, and critical—need zone-based risk assessment under IEC 62443 rather than uniform treatment.

Segmentation Without Chaos

Good OT segmentation protects manufacturing KPIs: availability, performance, and quality. IT teams assisting segmentation must understand that changes which cause unplanned downtime or scrap undermine the business case for security.

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