ISA 62443 Maintenance — ISA/IEC 62443 Cybersecurity Maintenance Specialist
The fourth tier of ISA-62443 certification covering the operational maintenance of ICS security programs — patching, change management, continuous monitoring, and ongoing compliance in live industrial environments. Not DoD 8140 approved. Addresses the unique challenge of maintaining security in OT environments where systems often cannot be patched or restarted without significant operational disruption. Relevant for OT security managers and operations technology staff responsible for maintaining security posture in running industrial facilities.
| Issuer | ISA (International Society of Automation) |
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| Level | intermediate |
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| Domains | OT / ICS / IoT Security |
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| Practical weight | 25% |
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| Cost (USD) | 1000 |
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| Renewal | 3 years |
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| Skills | isa_62443_maintenance_procedures, patch_management_ot, security_program_maintenance, change_management_ot, continuous_monitoring_ot, compliance_maintenance |
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