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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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.
What ISASecure CSA certification actually evaluates
ISASecure CSA certifies a component against IEC 62443-4-2: 166 functional requirements, four component types, three assessment streams and one security level.
What ISASecure ICSA certification actually evaluates
ISASecure ICSA certifies IIoT devices and gateways against IEC 62443-4-2: 182 requirements, two device types, a Core or Advanced tier and a maintenance audit.
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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