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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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.
Full or readiness evaluation: the SDLA choice that sets your certificate at 36 or 12 months
ISASecure SDLA has two evaluation methods. One requirement passed by readiness evaluation sets the certificate at 12 months, not 36. The 21 rows that decide it.
What counts as a major nonconformity in an IEC 62443-4-1 audit: the 31 SDLA minimum requirements
In an ISASecure SDLA audit a finding is major when no evidence exists, or when one of 31 minimum requirements is applied inconsistently. The full list.
IEC 62443-4-1 certification levels: why ISASecure SDLA has none and every requirement must pass
ISASecure SDLA carried certification levels until 2018. Today it has none, and no maturity level either: every applicable IEC 62443-4-1 requirement must pass.
The SDLA prerequisite for CSA, ICSA and SSA: one process audit, three product schemes
ISASecure CSA, ICSA and SSA each require a valid SDLA certificate. What the process audit settles once, what every product scheme re-checks, and how to plan.
What is ISASecure SDLA, and what does the certificate actually certify?
ISASecure SDLA certifies a development organisation and a versioned development process against IEC 62443-4-1: eight practices, 47 requirements, no levels.
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Talk to the assessors who wrote these articles about what applies to you.