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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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.
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 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.
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