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 it takes to reach SL 3 in ISASecure CSA, by component type
Moving from SL 2 to SL 3 in ISASecure CSA adds 23 IEC 62443-4-2 requirements, 22 of them enhancements. What the step costs by component type and by FR.
Advanced is SL 4, except when it is SL 3: the ISASecure ICSA tier-to-level trap
ICSA Advanced maps to SL 4 in the functional assessment but to SL 3 in vulnerability testing. Why the mappings diverge and how to read the certificate.
What it takes to move a zone from SL 2 to SL 3 in ISASecure SSA
Raising a zone from SL 2 to SL 3 in ISASecure SSA adds 30 IEC 62443-3-3 rows: two base requirements and 28 enhancements, two of them lab-tested. All 30, by FR.
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