> series: sector_under_the_microscope —— part: 05/10 —— sector: manufacturing —— risk: production_line_shutdown<span class="cursor-blink">_</span>_
Manufacturing is undergoing a digital transformation that is simultaneously creating enormous efficiency gains and enormous security risks. The convergence of IT (information technology) and OT (operational technology) means that the same network that carries email and ERP data increasingly also carries commands to programmable logic controllers, industrial robots, and production line systems. A ransomware infection that once would have disrupted office productivity now has the potential to shut down physical production.
This article examines the specific cyber threats facing UK manufacturers, the unique challenges of securing environments where IT and OT converge, and the testing priorities that protect both data and production. Our experience testing industrial control systems directly informs our approach.
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Free Scoping CallThe most critical vulnerability in most manufacturing environments is not a specific CVE or misconfiguration — it is the boundary (or lack thereof) between the IT network and the OT network. When these networks are properly segmented, a compromise of the office email system cannot reach the production floor. When they are not — which is the case in a significant proportion of the manufacturers we test — a single phishing email can provide a path from the inbox to the industrial control system.
Our network penetration testing includes specific assessment of IT/OT segmentation — verifying that firewall rules, VLAN configurations, and access controls genuinely prevent lateral movement between corporate IT and production OT systems. The findings are frequently sobering.
For manufacturers in the defence supply chain, Cyber Essentials Plus is typically a mandatory requirement from prime contractors. For all manufacturers, SOC in a Box for Engineering and Manufacturing provides continuous monitoring that covers both IT and OT environments.
Next week, we examine the construction sector — an industry where project data, building management systems, and the proliferation of connected sites create a security challenge that most construction firms are only beginning to recognise.
We deliver penetration testing for manufacturers that covers both IT infrastructure and OT/ICS environments. Our methodology is designed for manufacturing constraints — non-invasive testing where production safety requires it, and comprehensive reporting that addresses both cyber risk and operational impact.
We'll scope your test for free and tell you exactly what you need. No obligation, no hard sell.
Free Scoping Call