ISASecure and IEC 62443, explained with the numbers
What each certification program actually evaluates, how the security levels and device types change the scope, and where the common points of confusion come from — written by the assessors who run these evaluations.
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After the certificate: ACSSA surveillance in years one and two, recertification in year three
How an ISASecure ACSSA certificate stays valid: 36 months, surveillance in years one and two, recertification in year three, nonconformities and suspension.
The ACSSA assessment process: four phases and the report you receive
How an ISASecure ACSSA evaluation runs: the plan you approve, the four ACSSA-304 phases from risk assessment to report, and how to read the ACSSA-303 report.
An asset owner's installed IACS: IEC 62443 asset owner certification scope under ISASecure ACSSA, and the six documents that define it
ISASecure ACSSA certifies an asset owner's installed IACS, bounded by six change-controlled documents: who may apply, what is in scope and what is carved out.
ACSSA evaluation results: ten result types, and the one that fails
ACSSA records ten result types across four IEC 62443 parts. Only Not met fails; three others pass only with approved documentation; unsampled zones get none.
The Security Maintenance Audit: how an ISASecure ICSA certificate stays valid
How the ISASecure ICSA Security Maintenance Audit works: four IEC 62443-4-1 requirements, four topics, when audits fall, findings, suspension, withdrawal.
SDLA certificate validity and recertification: how an ISASecure SDLA certificate is kept
How long an ISASecure SDLA certificate lasts, 36 or 12 months, how a recertification audit renews it, and why the scheme has no surveillance or suspension.
How to read an ISASecure SSA certificate and report: zones, levels and user-enforced mitigations
How to read an ISASecure SSA certificate and its SSA-303 report: capability levels per zone, the ten report sections, and the mitigations the user must apply.
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