What Is Industrial Cybersecurity? Protecting Your OT Network

Why Industrial Cybersecurity Matters

Industrial cyber attacks are no longer rare. The 2021 Oldsmar water treatment attack, the 2017 TRITON malware targeting safety systems, and the Colonial Pipeline ransomware attack demonstrated that factory networks are attractive and vulnerable targets. Unlike IT systems, a successful OT cyber attack can cause physical damage to equipment, endanger workers, and halt production for weeks.

Key OT Cybersecurity Risks

• Ransomware — encrypts SCADA servers and historian databases; demands payment to restore
• Remote access exploitation — unsecured VPN or RDP access to engineering workstations
• USB-borne malware — infected USB drives introduced during maintenance
• Unpatched HMI and SCADA software — older Windows XP/7 systems still common in Indian plants
• IT/OT network convergence — connecting OT directly to corporate IT without segmentation

IEC 62443: The Industrial Cybersecurity Standard

IEC 62443 is the international standard for industrial cybersecurity. It defines security levels (SL 1–4), roles (asset owner, integrator, supplier), and requirements for securing industrial control systems. Indian manufacturers supplying to global OEMs are increasingly required to demonstrate IEC 62443 compliance.

Practical Steps to Improve OT Security

• Segment OT and IT networks with a DMZ and industrial firewall
• Disable unused COM ports and USB ports on HMIs and industrial PCs
• Enable Secure Boot and TPM 2.0 on industrial PCs (supported by Avalue platforms)
• Replace end-of-life Windows XP/7 HMI systems with modern hardware
• Enforce multi-factor authentication for all remote access