Summary Points
- ‘Secure by design’ remains elusive in OT environments due to early architectural decisions—such as segmentation, remote access, and asset visibility—being fixed before deployment, making remediation costly and disruptive.
- Security is often deferred to later project phases, especially during procurement and operational entry, leading to vulnerabilities like unmanaged vendor access, missing logs, and configuration drift that are only identified during acceptance testing.
- Integrating security requirements into procurement, design reviews, and acceptance testing—through contractual obligations, verifying vendor capabilities, and rigorous FAT/SAT—can significantly reduce operational risks and mitigate vulnerabilities.
- Achieving a clean handover with comprehensive documentation, validated security controls, and operational proficiency is critical; without it, organizations face gaps in monitoring, support, and resilience, especially when legacy systems hinder security implementation.
Underlying Problem
The story emphasizes that despite the importance of ‘secure by design’ in operational technology (OT) environments, its implementation remains challenging. Experts reveal that security often gets deferred during project cycles, especially in the early stages like front-end engineering design (FEED) and procurement, where costs are minimized and legacy systems dominate. As a result, vulnerabilities such as undocumented vendor access, weak asset management, and configuration drift emerge, leading to significant operational risks and costs after commissioning. This delay in integrating security measures stems from a combination of cost-cutting motives, lack of skilled resources, and fragmented governance, which hampers effective risk mitigation. Reports from organizations like Claroty, Deloitte, and KPMG highlight low security maturity across many OT companies, with most security controls only verified during factory and site acceptance testing (FAT/SAT). Consequently, without contractual enforceability and comprehensive testing, vulnerabilities persist, and operational handovers become incomplete, leaving systems exposed. Experts advocate for embedding security from the earliest project stages, enforcing clear contractual requirements, and conducting rigorous security-specific acceptance tests to ensure a resilient, secure industrial infrastructure.
Furthermore, the article explains that successful secure handover involves thorough documentation, validated system configurations, and operational training, which are often missing in rushed or incomplete projects. Legacy (brownfield) environments pose additional challenges due to outdated equipment and architecture, requiring incremental and compensating controls rather than complete overhaul. Ultimately, ensuring security by design demands a proactive approach—integrating security into every phase from concept to commissioning—and strict contractual measures that hold vendors accountable. When these practices are followed, organizations can reduce risks, improve security maturity, and protect critical infrastructure from evolving cyber threats effectively.
What’s at Stake?
Building secure industrial infrastructure is essential; without adopting security-by-design from the very beginning, your business faces serious risks. If security is an afterthought, vulnerabilities may remain hidden until exploitation occurs, leading to costly breaches or operational failures. Moreover, weaknesses in design can delay project timelines, inflate costs, and damage your reputation. As a result, your business could suffer financial losses, legal penalties, and decreased customer trust. Ultimately, neglecting this crucial approach puts your entire operation at risk—highlighting why security must be integrated from concept through commissioning.
Possible Remediation Steps
Implementing robust mitigating actions promptly is critical to safeguarding industrial systems, ensuring operational continuity, and preventing potential catastrophic failures or cyber threats.
Preventive Measures
- Enforce Secure Design
- Conduct Risk Assessments
- Integrate Security in Design
Detection Strategies
- Monitoring & Alerts
- Vulnerability Scanning
- Anomaly Detection
Response and Recovery
- Incident Response Plans
- Timely Patch Management
- System Restoration Protocols
Continuous Improvement
- Regular Security Audits
- Employee Training
- Feedback & Lessons Learned
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Disclaimer: The information provided may not always be accurate or up to date. Please do your own research, as the cybersecurity landscape evolves rapidly. Intended for secondary references purposes only.
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