Securing operational technology and industrial control systems — IEC 62443, the Purdue Model and network segmentation, SCADA ransomware prevention, CISA performance goals, and secure remote access for critical infrastructure.
OT cybersecurity protects the industrial control systems — SCADA, PLCs, RTUs, and HMIs — that run physical processes such as power, water, and oil and …
IEC 62443 is the leading international standard for securing industrial automation and control systems. It organizes protection around zones and conduits, defines security levels (SL …
The Purdue Model is the reference architecture for segmenting OT networks. It organizes systems into levels — from field devices at the bottom up through …
Ransomware rarely targets SCADA directly; it usually enters through the IT network or remote access and spreads into OT across flat or poorly segmented networks. …
Secure remote access lets vendors and engineers reach SCADA systems without opening a path for attackers. The safe pattern is brokered, monitored access through a …
OT and IT security share goals but differ in priorities and constraints. IT puts confidentiality first and can patch or reboot freely; OT puts safety …
CISA's Cross-Sector Cybersecurity Performance Goals (CPGs) are a voluntary baseline of foundational practices for critical infrastructure, including OT and ICS environments. They are designed to …
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