IEC 62443
IEC 62443-3-3:2013 system security requirements and security levels – IEC 62443

IEC 62443 SR 1.5: Authenticator management

The control system shall initialize authenticator content, change all default authenticators on installation, change or refresh authenticators, and protect them from unauthorized disclosure and modification when stored and transmitted. RE 1 adds hardware protection for the identity credentials of software processes, which the held ISAGCA paper does not include at SL 2.

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