ISO 27001 Certification Assurance: The 7 Most Common Failures in Manufacturing

Manufacturing ISO 27001 failures cluster around the OT/IT boundary. Organisations that scope out their operational technology environments, miss OT-specific threats in risk assessment, or fail to apply security controls to production systems consistently fail Stage 2. These are the seven failures and how to fix them.

Published May 2026·Manufacturing·ISO 27001 Manufacturing Cyber Security OT Security

Why Manufacturing ISO 27001 Certification Fails

ISO 27001 certification failure in manufacturing is rarely caused by insufficient IT security management. It is caused by inadequate scope definition, insufficient OT/IT boundary controls, and asset management that covers enterprise IT without covering the operational technology that represents the most significant information security risk in a manufacturing environment.

43%of manufacturing organisations fail ISO 27001 Stage 2 on first attempt — vs 28% for service sector organisations

OT/IT boundaryThe single most common Stage 2 finding in manufacturing ISO 27001 audits

3.4xManufacturing organisations experience cyber incidents at 3.4x the rate of equivalent service sector organisations

Download the complete whitepaper

All 10 pages — free, instant access.

No spam. No sales calls. We will email you a copy for reference.

Pursuing ISO 27001 for your manufacturing operation?

Cyber security specialists. Certification programme within 48 hours.

Get a Proposal →WhatsApp

About AjaCertX

AjaCertX is a specialist compliance, certification and assurance partner serving manufacturing organisations. Our Cyber and Digital Security practice delivers ISO 27001, OT security assessment and NIS2 compliance.