IEC 62443
IEC 62443-4-2:2019 technical security requirements for IACS components – IEC 62443

IEC 62443 CR 3.9: Protection of audit information

What does CR 3.9 require?

The component shall protect audit information and tools from unauthorized access, modification and deletion, from SL-C 2 per the ISAGCA paper. RE 1 write-once audit records.

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