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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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.
IEC 62443 target security levels in ACSSA: the asset owner's level decides what is checked, and nothing is awarded
How ACSSA uses each zone's target security level from the asset owner's IEC 62443-3-2 risk assessment to decide what is checked, and why no level is awarded.
Service providers in ACSSA: IEC 62443-2-4, delegated tasks and the VIC shortcut
How ISASecure ACSSA evaluates an asset owner's service providers against IEC 62443-2-4: who counts, delegated tasks, the agreed list, NR-A and the VIC result.
What ISASecure ACSSA certification actually evaluates
ISASecure ACSSA certifies an asset owner's installed control system against IEC 62443-2-1, 3-2, 3-3 and 2-4 at maturity level 3. Here is the map.
CCSC explained: the four IEC 62443-4-2 constraints that apply to every component
IEC 62443-4-2 has a second axis beyond the seven foundational requirements: four common component security constraints. What each means for a CSA certificate.
Cloud links, wireless radios and the per-interface rule in ISASecure ICSA
In ISASecure ICSA, cloud and wireless links are ordinary accessible interfaces. How the per-interface rule and the untrusted-network declaration set the effort.
One certificate, several levels: how ISASecure SSA assigns a capability security level per zone
How ISASecure SSA assigns an IEC 62443 capability security level to each zone of a system, why one certificate can carry several levels, and how to specify it.
Reference layouts and scalable systems: how one ISASecure SSA certificate covers a family of configurations
How ISASecure SSA certifies a scalable IEC 62443-3-3 system: zone specifications, layouts in scope, the reference layout the lab tests, and nine submissions.
A system as sold: IEC 62443-3-3 system certification scope under ISASecure SSA, and what falls outside it
ISASecure SSA certifies a control-system product as sold, at a version, in a fixed or scalable layout: the four eligibility criteria and what falls outside.
What ISASecure SSA certification actually evaluates
ISASecure SSA certifies a control system as sold against IEC 62443-3-3, with a capability security level per zone. Four elements, 116 functional rows: the map.
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